81488680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{367}}^1$

素因数の和:459

約数の個数: 128

約数和(自身を含む): 229985280

約数和(自身を除く): 148496600

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 61, 65, 70, 91, 104, 122, 130, 140, 182, 244, 260, 280, 305, 364, 367, 427, 455, 488, 520, 610, 728, 734, 793, 854, 910, 1220, 1468, 1586, 1708, 1820, 1835, 2135, 2440, 2569, 2936, 3172, 3416, 3640, 3670, 3965, 4270, 4771, 5138, 5551, 6344, 7340, 7930, 8540, 9542, 10276, 11102, 12845, 14680, 15860, 17080, 19084, 20552, 22204, 22387, 23855, 25690, 27755, 31720, 33397, 38168, 44408, 44774, 47710, 51380, 55510, 66794, 89548, 95420, 102760, 111020, 111935, 133588, 156709, 166985, 179096, 190840, 222040, 223870, 267176, 291031, 313418, 333970, 447740, 582062, 626836, 667940, 783545, 895480, 1164124, 1253672, 1335880, 1455155, 1567090, 2037217, 2328248, 2910310, 3134180, 4074434, 5820620, 6268360, 8148868, 10186085, 11641240, 16297736, 20372170, 40744340, 81488680]

約数ペア:

[(1, 81488680), (2, 40744340), (4, 20372170), (5, 16297736), (7, 11641240), (8, 10186085), (10, 8148868), (13, 6268360), (14, 5820620), (20, 4074434), (26, 3134180), (28, 2910310), (35, 2328248), (40, 2037217), (52, 1567090), (56, 1455155), (61, 1335880), (65, 1253672), (70, 1164124), (91, 895480), (104, 783545), (122, 667940), (130, 626836), (140, 582062), (182, 447740), (244, 333970), (260, 313418), (280, 291031), (305, 267176), (364, 223870), (367, 222040), (427, 190840), (455, 179096), (488, 166985), (520, 156709), (610, 133588), (728, 111935), (734, 111020), (793, 102760), (854, 95420), (910, 89548), (1220, 66794), (1468, 55510), (1586, 51380), (1708, 47710), (1820, 44774), (1835, 44408), (2135, 38168), (2440, 33397), (2569, 31720), (2936, 27755), (3172, 25690), (3416, 23855), (3640, 22387), (3670, 22204), (3965, 20552), (4270, 19084), (4771, 17080), (5138, 15860), (5551, 14680), (6344, 12845), (7340, 11102), (7930, 10276), (8540, 9542)]