21170500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3257}}^1$

素因数の和:3289

約数の個数: 48

約数和(自身を含む): 49808304

約数和(自身を除く): 28637804

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 3257, 6500, 6514, 13028, 16285, 32570, 42341, 65140, 81425, 84682, 162850, 169364, 211705, 325700, 407125, 423410, 814250, 846820, 1058525, 1628500, 2117050, 4234100, 5292625, 10585250, 21170500]

約数ペア:

[(1, 21170500), (2, 10585250), (4, 5292625), (5, 4234100), (10, 2117050), (13, 1628500), (20, 1058525), (25, 846820), (26, 814250), (50, 423410), (52, 407125), (65, 325700), (100, 211705), (125, 169364), (130, 162850), (250, 84682), (260, 81425), (325, 65140), (500, 42341), (650, 32570), (1300, 16285), (1625, 13028), (3250, 6514), (3257, 6500)]