18960020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15541}}^1$

素因数の和:15611

約数の個数: 24

約数和(自身を含む): 40471368

約数和(自身を除く): 21511348

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15541, 31082, 62164, 77705, 155410, 310820, 948001, 1896002, 3792004, 4740005, 9480010, 18960020]

約数ペア:

[(1, 18960020), (2, 9480010), (4, 4740005), (5, 3792004), (10, 1896002), (20, 948001), (61, 310820), (122, 155410), (244, 77705), (305, 62164), (610, 31082), (1220, 15541)]