18980572

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 37340352

約数和(自身を除く): 18359780

約数列:

[1, 2, 4, 13, 26, 52, 53, 71, 97, 106, 142, 194, 212, 284, 388, 689, 923, 1261, 1378, 1846, 2522, 2756, 3692, 3763, 5044, 5141, 6887, 7526, 10282, 13774, 15052, 20564, 27548, 48919, 66833, 89531, 97838, 133666, 179062, 195676, 267332, 358124, 365011, 730022, 1460044, 4745143, 9490286, 18980572]

約数ペア:

[(1, 18980572), (2, 9490286), (4, 4745143), (13, 1460044), (26, 730022), (52, 365011), (53, 358124), (71, 267332), (97, 195676), (106, 179062), (142, 133666), (194, 97838), (212, 89531), (284, 66833), (388, 48919), (689, 27548), (923, 20564), (1261, 15052), (1378, 13774), (1846, 10282), (2522, 7526), (2756, 6887), (3692, 5141), (3763, 5044)]