18961540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{313}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 43203888

約数和(自身を除く): 24242348

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 233, 260, 313, 466, 626, 932, 1165, 1252, 1565, 2330, 3029, 3130, 4069, 4660, 6058, 6260, 8138, 12116, 15145, 16276, 20345, 30290, 40690, 60580, 72929, 81380, 145858, 291716, 364645, 729290, 948077, 1458580, 1896154, 3792308, 4740385, 9480770, 18961540]

約数ペア:

[(1, 18961540), (2, 9480770), (4, 4740385), (5, 3792308), (10, 1896154), (13, 1458580), (20, 948077), (26, 729290), (52, 364645), (65, 291716), (130, 145858), (233, 81380), (260, 72929), (313, 60580), (466, 40690), (626, 30290), (932, 20345), (1165, 16276), (1252, 15145), (1565, 12116), (2330, 8138), (3029, 6260), (3130, 6058), (4069, 4660)]