81772740

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{7211}}^1$

素因数の和:7239

約数の個数: 120

約数和(自身を含む): 293211072

約数和(自身を除く): 211438332

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1890, 2268, 2835, 3780, 5670, 7211, 11340, 14422, 21633, 28844, 36055, 43266, 50477, 64899, 72110, 86532, 100954, 108165, 129798, 144220, 151431, 194697, 201908, 216330, 252385, 259596, 302862, 324495, 389394, 432660, 454293, 504770, 584091, 605724, 648990, 757155, 778788, 908586, 973485, 1009540, 1168182, 1297980, 1362879, 1514310, 1817172, 1946970, 2271465, 2336364, 2725758, 2920455, 3028620, 3893940, 4088637, 4542930, 5451516, 5840910, 6814395, 8177274, 9085860, 11681820, 13628790, 16354548, 20443185, 27257580, 40886370, 81772740]

約数ペア:

[(1, 81772740), (2, 40886370), (3, 27257580), (4, 20443185), (5, 16354548), (6, 13628790), (7, 11681820), (9, 9085860), (10, 8177274), (12, 6814395), (14, 5840910), (15, 5451516), (18, 4542930), (20, 4088637), (21, 3893940), (27, 3028620), (28, 2920455), (30, 2725758), (35, 2336364), (36, 2271465), (42, 1946970), (45, 1817172), (54, 1514310), (60, 1362879), (63, 1297980), (70, 1168182), (81, 1009540), (84, 973485), (90, 908586), (105, 778788), (108, 757155), (126, 648990), (135, 605724), (140, 584091), (162, 504770), (180, 454293), (189, 432660), (210, 389394), (252, 324495), (270, 302862), (315, 259596), (324, 252385), (378, 216330), (405, 201908), (420, 194697), (540, 151431), (567, 144220), (630, 129798), (756, 108165), (810, 100954), (945, 86532), (1134, 72110), (1260, 64899), (1620, 50477), (1890, 43266), (2268, 36055), (2835, 28844), (3780, 21633), (5670, 14422), (7211, 11340)]