81498340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{283}}^1$

素因数の和:338

約数の個数: 144

約数和(自身を含む): 228445056

約数和(自身を除く): 146946716

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 28, 34, 35, 44, 55, 68, 70, 77, 85, 110, 119, 121, 140, 154, 170, 187, 220, 238, 242, 283, 308, 340, 374, 385, 476, 484, 566, 595, 605, 748, 770, 847, 935, 1132, 1190, 1210, 1309, 1415, 1540, 1694, 1870, 1981, 2057, 2380, 2420, 2618, 2830, 3113, 3388, 3740, 3962, 4114, 4235, 4811, 5236, 5660, 6226, 6545, 7924, 8228, 8470, 9622, 9905, 10285, 12452, 13090, 14399, 15565, 16940, 19244, 19810, 20570, 21791, 24055, 26180, 28798, 31130, 33677, 34243, 39620, 41140, 43582, 48110, 52921, 57596, 62260, 67354, 68486, 71995, 87164, 96220, 105842, 108955, 134708, 136972, 143990, 168385, 171215, 211684, 217910, 239701, 264605, 287980, 336770, 342430, 370447, 435820, 479402, 529210, 582131, 673540, 684860, 740894, 958804, 1058420, 1164262, 1198505, 1481788, 1852235, 2328524, 2397010, 2910655, 3704470, 4074917, 4794020, 5821310, 7408940, 8149834, 11642620, 16299668, 20374585, 40749170, 81498340]

約数ペア:

[(1, 81498340), (2, 40749170), (4, 20374585), (5, 16299668), (7, 11642620), (10, 8149834), (11, 7408940), (14, 5821310), (17, 4794020), (20, 4074917), (22, 3704470), (28, 2910655), (34, 2397010), (35, 2328524), (44, 1852235), (55, 1481788), (68, 1198505), (70, 1164262), (77, 1058420), (85, 958804), (110, 740894), (119, 684860), (121, 673540), (140, 582131), (154, 529210), (170, 479402), (187, 435820), (220, 370447), (238, 342430), (242, 336770), (283, 287980), (308, 264605), (340, 239701), (374, 217910), (385, 211684), (476, 171215), (484, 168385), (566, 143990), (595, 136972), (605, 134708), (748, 108955), (770, 105842), (847, 96220), (935, 87164), (1132, 71995), (1190, 68486), (1210, 67354), (1309, 62260), (1415, 57596), (1540, 52921), (1694, 48110), (1870, 43582), (1981, 41140), (2057, 39620), (2380, 34243), (2420, 33677), (2618, 31130), (2830, 28798), (3113, 26180), (3388, 24055), (3740, 21791), (3962, 20570), (4114, 19810), (4235, 19244), (4811, 16940), (5236, 15565), (5660, 14399), (6226, 13090), (6545, 12452), (7924, 10285), (8228, 9905), (8470, 9622)]