21265400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{8179}}^1$

素因数の和:8208

約数の個数: 48

約数和(自身を含む): 53251800

約数和(自身を除く): 31986400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 8179, 16358, 32716, 40895, 65432, 81790, 106327, 163580, 204475, 212654, 327160, 408950, 425308, 531635, 817900, 850616, 1063270, 1635800, 2126540, 2658175, 4253080, 5316350, 10632700, 21265400]

約数ペア:

[(1, 21265400), (2, 10632700), (4, 5316350), (5, 4253080), (8, 2658175), (10, 2126540), (13, 1635800), (20, 1063270), (25, 850616), (26, 817900), (40, 531635), (50, 425308), (52, 408950), (65, 327160), (100, 212654), (104, 204475), (130, 163580), (200, 106327), (260, 81790), (325, 65432), (520, 40895), (650, 32716), (1300, 16358), (2600, 8179)]