21142550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2957}}^1$

素因数の和:2993

約数の個数: 48

約数和(自身を含む): 46215792

約数和(自身を除く): 25073242

約数列:

[1, 2, 5, 10, 11, 13, 22, 25, 26, 50, 55, 65, 110, 130, 143, 275, 286, 325, 550, 650, 715, 1430, 2957, 3575, 5914, 7150, 14785, 29570, 32527, 38441, 65054, 73925, 76882, 147850, 162635, 192205, 325270, 384410, 422851, 813175, 845702, 961025, 1626350, 1922050, 2114255, 4228510, 10571275, 21142550]

約数ペア:

[(1, 21142550), (2, 10571275), (5, 4228510), (10, 2114255), (11, 1922050), (13, 1626350), (22, 961025), (25, 845702), (26, 813175), (50, 422851), (55, 384410), (65, 325270), (110, 192205), (130, 162635), (143, 147850), (275, 76882), (286, 73925), (325, 65054), (550, 38441), (650, 32527), (715, 29570), (1430, 14785), (2957, 7150), (3575, 5914)]