21583720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{10181}}^1$

素因数の和:10245

約数の個数: 32

約数和(自身を含む): 49484520

約数和(自身を除く): 27900800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 10181, 20362, 40724, 50905, 81448, 101810, 203620, 407240, 539593, 1079186, 2158372, 2697965, 4316744, 5395930, 10791860, 21583720]

約数ペア:

[(1, 21583720), (2, 10791860), (4, 5395930), (5, 4316744), (8, 2697965), (10, 2158372), (20, 1079186), (40, 539593), (53, 407240), (106, 203620), (212, 101810), (265, 81448), (424, 50905), (530, 40724), (1060, 20362), (2120, 10181)]