20879518

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{19}}^2\times {\mathrm{239}}^1$

素因数の和:301

約数の個数: 36

約数和(自身を含む): 36484560

約数和(自身を除く): 15605042

約数列:

[1, 2, 11, 19, 22, 38, 121, 209, 239, 242, 361, 418, 478, 722, 2299, 2629, 3971, 4541, 4598, 5258, 7942, 9082, 28919, 43681, 49951, 57838, 86279, 87362, 99902, 172558, 549461, 949069, 1098922, 1898138, 10439759, 20879518]

約数ペア:

[(1, 20879518), (2, 10439759), (11, 1898138), (19, 1098922), (22, 949069), (38, 549461), (121, 172558), (209, 99902), (239, 87362), (242, 86279), (361, 57838), (418, 49951), (478, 43681), (722, 28919), (2299, 9082), (2629, 7942), (3971, 5258), (4541, 4598)]