18679940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{54941}}^1$

素因数の和:54967

約数の個数: 24

約数和(自身を含む): 41536152

約数和(自身を除く): 22856212

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 54941, 109882, 219764, 274705, 549410, 933997, 1098820, 1867994, 3735988, 4669985, 9339970, 18679940]

約数ペア:

[(1, 18679940), (2, 9339970), (4, 4669985), (5, 3735988), (10, 1867994), (17, 1098820), (20, 933997), (34, 549410), (68, 274705), (85, 219764), (170, 109882), (340, 54941)]