1215707780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{641}}^1$

素因数の和:730

約数の個数: 192

約数和(自身を含む): 3313336320

約数和(自身を除く): 2097628540

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 23, 28, 31, 35, 38, 46, 62, 70, 76, 92, 95, 115, 124, 133, 140, 155, 161, 190, 217, 230, 266, 310, 322, 380, 434, 437, 460, 532, 589, 620, 641, 644, 665, 713, 805, 868, 874, 1085, 1178, 1282, 1330, 1426, 1610, 1748, 2170, 2185, 2356, 2564, 2660, 2852, 2945, 3059, 3205, 3220, 3565, 4123, 4340, 4370, 4487, 4991, 5890, 6118, 6410, 7130, 8246, 8740, 8974, 9982, 11780, 12179, 12236, 12820, 13547, 14260, 14743, 15295, 16492, 17948, 19871, 19964, 20615, 22435, 24358, 24955, 27094, 29486, 30590, 39742, 41230, 44870, 48716, 49910, 54188, 58972, 60895, 61180, 67735, 73715, 79484, 82460, 85253, 89740, 94829, 99355, 99820, 103201, 121790, 135470, 139097, 147430, 170506, 189658, 198710, 206402, 243580, 270940, 278194, 280117, 294860, 341012, 377549, 379316, 397420, 412804, 426265, 457033, 474145, 516005, 556388, 560234, 695485, 755098, 852530, 914066, 948290, 1032010, 1120468, 1390970, 1400585, 1510196, 1705060, 1828132, 1887745, 1896580, 1960819, 2064020, 2285165, 2642843, 2781940, 2801170, 3199231, 3775490, 3921638, 4570330, 5285686, 5602340, 6398462, 7550980, 7843276, 8683627, 9140660, 9804095, 10571372, 12796924, 13214215, 15996155, 17367254, 19608190, 26428430, 31992310, 34734508, 39216380, 43418135, 52856860, 60785389, 63984620, 86836270, 121570778, 173672540, 243141556, 303926945, 607853890, 1215707780]

約数ペア:

[(1, 1215707780), (2, 607853890), (4, 303926945), (5, 243141556), (7, 173672540), (10, 121570778), (14, 86836270), (19, 63984620), (20, 60785389), (23, 52856860), (28, 43418135), (31, 39216380), (35, 34734508), (38, 31992310), (46, 26428430), (62, 19608190), (70, 17367254), (76, 15996155), (92, 13214215), (95, 12796924), (115, 10571372), (124, 9804095), (133, 9140660), (140, 8683627), (155, 7843276), (161, 7550980), (190, 6398462), (217, 5602340), (230, 5285686), (266, 4570330), (310, 3921638), (322, 3775490), (380, 3199231), (434, 2801170), (437, 2781940), (460, 2642843), (532, 2285165), (589, 2064020), (620, 1960819), (641, 1896580), (644, 1887745), (665, 1828132), (713, 1705060), (805, 1510196), (868, 1400585), (874, 1390970), (1085, 1120468), (1178, 1032010), (1282, 948290), (1330, 914066), (1426, 852530), (1610, 755098), (1748, 695485), (2170, 560234), (2185, 556388), (2356, 516005), (2564, 474145), (2660, 457033), (2852, 426265), (2945, 412804), (3059, 397420), (3205, 379316), (3220, 377549), (3565, 341012), (4123, 294860), (4340, 280117), (4370, 278194), (4487, 270940), (4991, 243580), (5890, 206402), (6118, 198710), (6410, 189658), (7130, 170506), (8246, 147430), (8740, 139097), (8974, 135470), (9982, 121790), (11780, 103201), (12179, 99820), (12236, 99355), (12820, 94829), (13547, 89740), (14260, 85253), (14743, 82460), (15295, 79484), (16492, 73715), (17948, 67735), (19871, 61180), (19964, 60895), (20615, 58972), (22435, 54188), (24358, 49910), (24955, 48716), (27094, 44870), (29486, 41230), (30590, 39742)]