821600

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:112

約数の個数: 72

約数和(自身を含む): 2187360

約数和(自身を除く): 1365760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 79, 80, 100, 104, 130, 158, 160, 200, 208, 260, 316, 325, 395, 400, 416, 520, 632, 650, 790, 800, 1027, 1040, 1264, 1300, 1580, 1975, 2054, 2080, 2528, 2600, 3160, 3950, 4108, 5135, 5200, 6320, 7900, 8216, 10270, 10400, 12640, 15800, 16432, 20540, 25675, 31600, 32864, 41080, 51350, 63200, 82160, 102700, 164320, 205400, 410800, 821600]

約数ペア:

[(1, 821600), (2, 410800), (4, 205400), (5, 164320), (8, 102700), (10, 82160), (13, 63200), (16, 51350), (20, 41080), (25, 32864), (26, 31600), (32, 25675), (40, 20540), (50, 16432), (52, 15800), (65, 12640), (79, 10400), (80, 10270), (100, 8216), (104, 7900), (130, 6320), (158, 5200), (160, 5135), (200, 4108), (208, 3950), (260, 3160), (316, 2600), (325, 2528), (395, 2080), (400, 2054), (416, 1975), (520, 1580), (632, 1300), (650, 1264), (790, 1040), (800, 1027)]