81323840

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{173}}^1$

素因数の和:316

約数の個数: 112

約数和(自身を含む): 211610448

約数和(自身を除く): 130286608

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 113, 130, 160, 173, 208, 226, 260, 320, 346, 416, 452, 520, 565, 692, 832, 865, 904, 1040, 1130, 1384, 1469, 1730, 1808, 2080, 2249, 2260, 2768, 2938, 3460, 3616, 4160, 4498, 4520, 5536, 5876, 6920, 7232, 7345, 8996, 9040, 11072, 11245, 11752, 13840, 14690, 17992, 18080, 19549, 22490, 23504, 27680, 29380, 35984, 36160, 39098, 44980, 47008, 55360, 58760, 71968, 78196, 89960, 94016, 97745, 117520, 143936, 156392, 179920, 195490, 235040, 254137, 312784, 359840, 390980, 470080, 508274, 625568, 719680, 781960, 1016548, 1251136, 1270685, 1563920, 2033096, 2541370, 3127840, 4066192, 5082740, 6255680, 8132384, 10165480, 16264768, 20330960, 40661920, 81323840]

約数ペア:

[(1, 81323840), (2, 40661920), (4, 20330960), (5, 16264768), (8, 10165480), (10, 8132384), (13, 6255680), (16, 5082740), (20, 4066192), (26, 3127840), (32, 2541370), (40, 2033096), (52, 1563920), (64, 1270685), (65, 1251136), (80, 1016548), (104, 781960), (113, 719680), (130, 625568), (160, 508274), (173, 470080), (208, 390980), (226, 359840), (260, 312784), (320, 254137), (346, 235040), (416, 195490), (452, 179920), (520, 156392), (565, 143936), (692, 117520), (832, 97745), (865, 94016), (904, 89960), (1040, 78196), (1130, 71968), (1384, 58760), (1469, 55360), (1730, 47008), (1808, 44980), (2080, 39098), (2249, 36160), (2260, 35984), (2768, 29380), (2938, 27680), (3460, 23504), (3616, 22490), (4160, 19549), (4498, 18080), (4520, 17992), (5536, 14690), (5876, 13840), (6920, 11752), (7232, 11245), (7345, 11072), (8996, 9040)]