208407680

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{677}}^1$

素因数の和:746

約数の個数: 128

約数和(自身を含む): 551864880

約数和(自身を除く): 343457200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 37, 40, 52, 64, 65, 74, 80, 104, 128, 130, 148, 160, 185, 208, 260, 296, 320, 370, 416, 481, 520, 592, 640, 677, 740, 832, 962, 1040, 1184, 1354, 1480, 1664, 1924, 2080, 2368, 2405, 2708, 2960, 3385, 3848, 4160, 4736, 4810, 5416, 5920, 6770, 7696, 8320, 8801, 9620, 10832, 11840, 13540, 15392, 17602, 19240, 21664, 23680, 25049, 27080, 30784, 35204, 38480, 43328, 44005, 50098, 54160, 61568, 70408, 76960, 86656, 88010, 100196, 108320, 125245, 140816, 153920, 176020, 200392, 216640, 250490, 281632, 307840, 325637, 352040, 400784, 433280, 500980, 563264, 651274, 704080, 801568, 1001960, 1126528, 1302548, 1408160, 1603136, 1628185, 2003920, 2605096, 2816320, 3206272, 3256370, 4007840, 5210192, 5632640, 6512740, 8015680, 10420384, 13025480, 16031360, 20840768, 26050960, 41681536, 52101920, 104203840, 208407680]

約数ペア:

[(1, 208407680), (2, 104203840), (4, 52101920), (5, 41681536), (8, 26050960), (10, 20840768), (13, 16031360), (16, 13025480), (20, 10420384), (26, 8015680), (32, 6512740), (37, 5632640), (40, 5210192), (52, 4007840), (64, 3256370), (65, 3206272), (74, 2816320), (80, 2605096), (104, 2003920), (128, 1628185), (130, 1603136), (148, 1408160), (160, 1302548), (185, 1126528), (208, 1001960), (260, 801568), (296, 704080), (320, 651274), (370, 563264), (416, 500980), (481, 433280), (520, 400784), (592, 352040), (640, 325637), (677, 307840), (740, 281632), (832, 250490), (962, 216640), (1040, 200392), (1184, 176020), (1354, 153920), (1480, 140816), (1664, 125245), (1924, 108320), (2080, 100196), (2368, 88010), (2405, 86656), (2708, 76960), (2960, 70408), (3385, 61568), (3848, 54160), (4160, 50098), (4736, 44005), (4810, 43328), (5416, 38480), (5920, 35204), (6770, 30784), (7696, 27080), (8320, 25049), (8801, 23680), (9620, 21664), (10832, 19240), (11840, 17602), (13540, 15392)]