1990291212

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{379}}^1$

素因数の和:645

約数の個数: 216

約数和(自身を含む): 6346813200

約数和(自身を除く): 4356521988

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 49, 52, 63, 78, 84, 91, 98, 117, 126, 147, 156, 182, 196, 229, 234, 252, 273, 294, 364, 379, 441, 458, 468, 546, 588, 637, 687, 758, 819, 882, 916, 1092, 1137, 1274, 1374, 1516, 1603, 1638, 1764, 1911, 2061, 2274, 2548, 2653, 2748, 2977, 3206, 3276, 3411, 3822, 4122, 4548, 4809, 4927, 5306, 5733, 5954, 6412, 6822, 7644, 7959, 8244, 8931, 9618, 9854, 10612, 11221, 11466, 11908, 13644, 14427, 14781, 15918, 17862, 18571, 19236, 19708, 20839, 22442, 22932, 23877, 26793, 28854, 29562, 31836, 33663, 34489, 35724, 37142, 41678, 44343, 44884, 47754, 53586, 55713, 57708, 59124, 62517, 67326, 68978, 74284, 83356, 86791, 88686, 95508, 100989, 103467, 107172, 111426, 125034, 134652, 137956, 145873, 167139, 173582, 177372, 187551, 201978, 206934, 222852, 241423, 250068, 260373, 291746, 310401, 334278, 347164, 375102, 403956, 413868, 437619, 482846, 520746, 583492, 607537, 620802, 668556, 724269, 750204, 781119, 875238, 965692, 1041492, 1128283, 1215074, 1241604, 1312857, 1448538, 1562238, 1750476, 1822611, 2172807, 2256566, 2430148, 2625714, 2897076, 3124476, 3384849, 3645222, 4252759, 4345614, 4513132, 5251428, 5467833, 6769698, 7290444, 7897981, 8505518, 8691228, 10154547, 10935666, 12758277, 13539396, 15795962, 17011036, 20309094, 21871332, 23693943, 25516554, 31591924, 38274831, 40618188, 47387886, 51033108, 55285867, 71081829, 76549662, 94775772, 110571734, 142163658, 153099324, 165857601, 221143468, 284327316, 331715202, 497572803, 663430404, 995145606, 1990291212]

約数ペア:

[(1, 1990291212), (2, 995145606), (3, 663430404), (4, 497572803), (6, 331715202), (7, 284327316), (9, 221143468), (12, 165857601), (13, 153099324), (14, 142163658), (18, 110571734), (21, 94775772), (26, 76549662), (28, 71081829), (36, 55285867), (39, 51033108), (42, 47387886), (49, 40618188), (52, 38274831), (63, 31591924), (78, 25516554), (84, 23693943), (91, 21871332), (98, 20309094), (117, 17011036), (126, 15795962), (147, 13539396), (156, 12758277), (182, 10935666), (196, 10154547), (229, 8691228), (234, 8505518), (252, 7897981), (273, 7290444), (294, 6769698), (364, 5467833), (379, 5251428), (441, 4513132), (458, 4345614), (468, 4252759), (546, 3645222), (588, 3384849), (637, 3124476), (687, 2897076), (758, 2625714), (819, 2430148), (882, 2256566), (916, 2172807), (1092, 1822611), (1137, 1750476), (1274, 1562238), (1374, 1448538), (1516, 1312857), (1603, 1241604), (1638, 1215074), (1764, 1128283), (1911, 1041492), (2061, 965692), (2274, 875238), (2548, 781119), (2653, 750204), (2748, 724269), (2977, 668556), (3206, 620802), (3276, 607537), (3411, 583492), (3822, 520746), (4122, 482846), (4548, 437619), (4809, 413868), (4927, 403956), (5306, 375102), (5733, 347164), (5954, 334278), (6412, 310401), (6822, 291746), (7644, 260373), (7959, 250068), (8244, 241423), (8931, 222852), (9618, 206934), (9854, 201978), (10612, 187551), (11221, 177372), (11466, 173582), (11908, 167139), (13644, 145873), (14427, 137956), (14781, 134652), (15918, 125034), (17862, 111426), (18571, 107172), (19236, 103467), (19708, 100989), (20839, 95508), (22442, 88686), (22932, 86791), (23877, 83356), (26793, 74284), (28854, 68978), (29562, 67326), (31836, 62517), (33663, 59124), (34489, 57708), (35724, 55713), (37142, 53586), (41678, 47754), (44343, 44884)]