640740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{181}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 1834560

約数和(自身を除く): 1193820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 59, 60, 118, 177, 181, 236, 295, 354, 362, 543, 590, 708, 724, 885, 905, 1086, 1180, 1770, 1810, 2172, 2715, 3540, 3620, 5430, 10679, 10860, 21358, 32037, 42716, 53395, 64074, 106790, 128148, 160185, 213580, 320370, 640740]

約数ペア:

[(1, 640740), (2, 320370), (3, 213580), (4, 160185), (5, 128148), (6, 106790), (10, 64074), (12, 53395), (15, 42716), (20, 32037), (30, 21358), (59, 10860), (60, 10679), (118, 5430), (177, 3620), (181, 3540), (236, 2715), (295, 2172), (354, 1810), (362, 1770), (543, 1180), (590, 1086), (708, 905), (724, 885)]