20169490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{211}}^1$

素因数の和:319

約数の個数: 48

約数和(自身を含む): 40602240

約数和(自身を除く): 20432750

約数列:

[1, 2, 5, 10, 11, 22, 55, 79, 110, 121, 158, 211, 242, 395, 422, 605, 790, 869, 1055, 1210, 1738, 2110, 2321, 4345, 4642, 8690, 9559, 11605, 16669, 19118, 23210, 25531, 33338, 47795, 51062, 83345, 95590, 127655, 166690, 183359, 255310, 366718, 916795, 1833590, 2016949, 4033898, 10084745, 20169490]

約数ペア:

[(1, 20169490), (2, 10084745), (5, 4033898), (10, 2016949), (11, 1833590), (22, 916795), (55, 366718), (79, 255310), (110, 183359), (121, 166690), (158, 127655), (211, 95590), (242, 83345), (395, 51062), (422, 47795), (605, 33338), (790, 25531), (869, 23210), (1055, 19118), (1210, 16669), (1738, 11605), (2110, 9559), (2321, 8690), (4345, 4642)]