80810180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:126

約数の個数: 144

約数和(自身を含む): 207954432

約数和(自身を除く): 127144252

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 31, 34, 41, 44, 55, 62, 68, 82, 85, 110, 124, 155, 164, 170, 187, 205, 220, 289, 310, 340, 341, 374, 410, 451, 527, 578, 620, 682, 697, 748, 820, 902, 935, 1054, 1156, 1271, 1364, 1394, 1445, 1705, 1804, 1870, 2108, 2255, 2542, 2635, 2788, 2890, 3179, 3410, 3485, 3740, 4510, 5084, 5270, 5780, 5797, 6355, 6358, 6820, 6970, 7667, 8959, 9020, 10540, 11594, 11849, 12710, 12716, 13940, 13981, 15334, 15895, 17918, 21607, 23188, 23698, 25420, 27962, 28985, 30668, 31790, 35836, 38335, 43214, 44795, 47396, 55924, 57970, 59245, 63580, 69905, 76670, 86428, 89590, 98549, 108035, 115940, 118490, 130339, 139810, 153340, 179180, 197098, 216070, 236980, 237677, 260678, 279620, 367319, 394196, 432140, 475354, 492745, 521356, 651695, 734638, 950708, 985490, 1188385, 1303390, 1469276, 1836595, 1970980, 2376770, 2606780, 3673190, 4040509, 4753540, 7346380, 8081018, 16162036, 20202545, 40405090, 80810180]

約数ペア:

[(1, 80810180), (2, 40405090), (4, 20202545), (5, 16162036), (10, 8081018), (11, 7346380), (17, 4753540), (20, 4040509), (22, 3673190), (31, 2606780), (34, 2376770), (41, 1970980), (44, 1836595), (55, 1469276), (62, 1303390), (68, 1188385), (82, 985490), (85, 950708), (110, 734638), (124, 651695), (155, 521356), (164, 492745), (170, 475354), (187, 432140), (205, 394196), (220, 367319), (289, 279620), (310, 260678), (340, 237677), (341, 236980), (374, 216070), (410, 197098), (451, 179180), (527, 153340), (578, 139810), (620, 130339), (682, 118490), (697, 115940), (748, 108035), (820, 98549), (902, 89590), (935, 86428), (1054, 76670), (1156, 69905), (1271, 63580), (1364, 59245), (1394, 57970), (1445, 55924), (1705, 47396), (1804, 44795), (1870, 43214), (2108, 38335), (2255, 35836), (2542, 31790), (2635, 30668), (2788, 28985), (2890, 27962), (3179, 25420), (3410, 23698), (3485, 23188), (3740, 21607), (4510, 17918), (5084, 15895), (5270, 15334), (5780, 13981), (5797, 13940), (6355, 12716), (6358, 12710), (6820, 11849), (6970, 11594), (7667, 10540), (8959, 9020)]