661211880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{809}}^1$

素因数の和:976

約数の個数: 192

約数和(自身を含む): 2326968000

約数和(自身を除く): 1665756120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 139, 140, 147, 168, 196, 210, 245, 278, 280, 294, 392, 417, 420, 490, 556, 588, 695, 735, 809, 834, 840, 973, 980, 1112, 1176, 1390, 1470, 1618, 1668, 1946, 1960, 2085, 2427, 2780, 2919, 2940, 3236, 3336, 3892, 4045, 4170, 4854, 4865, 5560, 5663, 5838, 5880, 6472, 6811, 7784, 8090, 8340, 9708, 9730, 11326, 11676, 12135, 13622, 14595, 16180, 16680, 16989, 19416, 19460, 20433, 22652, 23352, 24270, 27244, 28315, 29190, 32360, 33978, 34055, 38920, 39641, 40866, 45304, 48540, 54488, 56630, 58380, 67956, 68110, 79282, 81732, 84945, 97080, 102165, 112451, 113260, 116760, 118923, 135912, 136220, 158564, 163464, 169890, 198205, 204330, 224902, 226520, 237846, 272440, 317128, 337353, 339780, 396410, 408660, 449804, 475692, 562255, 594615, 674706, 679560, 787157, 792820, 817320, 899608, 951384, 1124510, 1189230, 1349412, 1574314, 1585640, 1686765, 2249020, 2361471, 2378460, 2698824, 3148628, 3373530, 3935785, 4498040, 4722942, 4756920, 5510099, 6297256, 6747060, 7871570, 9445884, 11020198, 11807355, 13494120, 15743140, 16530297, 18891768, 22040396, 23614710, 27550495, 31486280, 33060594, 44080792, 47229420, 55100990, 66121188, 82651485, 94458840, 110201980, 132242376, 165302970, 220403960, 330605940, 661211880]

約数ペア:

[(1, 661211880), (2, 330605940), (3, 220403960), (4, 165302970), (5, 132242376), (6, 110201980), (7, 94458840), (8, 82651485), (10, 66121188), (12, 55100990), (14, 47229420), (15, 44080792), (20, 33060594), (21, 31486280), (24, 27550495), (28, 23614710), (30, 22040396), (35, 18891768), (40, 16530297), (42, 15743140), (49, 13494120), (56, 11807355), (60, 11020198), (70, 9445884), (84, 7871570), (98, 6747060), (105, 6297256), (120, 5510099), (139, 4756920), (140, 4722942), (147, 4498040), (168, 3935785), (196, 3373530), (210, 3148628), (245, 2698824), (278, 2378460), (280, 2361471), (294, 2249020), (392, 1686765), (417, 1585640), (420, 1574314), (490, 1349412), (556, 1189230), (588, 1124510), (695, 951384), (735, 899608), (809, 817320), (834, 792820), (840, 787157), (973, 679560), (980, 674706), (1112, 594615), (1176, 562255), (1390, 475692), (1470, 449804), (1618, 408660), (1668, 396410), (1946, 339780), (1960, 337353), (2085, 317128), (2427, 272440), (2780, 237846), (2919, 226520), (2940, 224902), (3236, 204330), (3336, 198205), (3892, 169890), (4045, 163464), (4170, 158564), (4854, 136220), (4865, 135912), (5560, 118923), (5663, 116760), (5838, 113260), (5880, 112451), (6472, 102165), (6811, 97080), (7784, 84945), (8090, 81732), (8340, 79282), (9708, 68110), (9730, 67956), (11326, 58380), (11676, 56630), (12135, 54488), (13622, 48540), (14595, 45304), (16180, 40866), (16680, 39641), (16989, 38920), (19416, 34055), (19460, 33978), (20433, 32360), (22652, 29190), (23352, 28315), (24270, 27244)]