25135220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2657}}^1$

素因数の和:2720

約数の個数: 48

約数和(自身を含む): 58943808

約数和(自身を除く): 33808588

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2365, 2657, 4730, 5314, 9460, 10628, 13285, 26570, 29227, 53140, 58454, 114251, 116908, 146135, 228502, 292270, 457004, 571255, 584540, 1142510, 1256761, 2285020, 2513522, 5027044, 6283805, 12567610, 25135220]

約数ペア:

[(1, 25135220), (2, 12567610), (4, 6283805), (5, 5027044), (10, 2513522), (11, 2285020), (20, 1256761), (22, 1142510), (43, 584540), (44, 571255), (55, 457004), (86, 292270), (110, 228502), (172, 146135), (215, 116908), (220, 114251), (430, 58454), (473, 53140), (860, 29227), (946, 26570), (1892, 13285), (2365, 10628), (2657, 9460), (4730, 5314)]