991185320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{799343}}^1$

素因数の和:799385

約数の個数: 32

約数和(自身を含む): 2302110720

約数和(自身を除く): 1310925400

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 799343, 1598686, 3197372, 3996715, 6394744, 7993430, 15986860, 24779633, 31973720, 49559266, 99118532, 123898165, 198237064, 247796330, 495592660, 991185320]

約数ペア:

[(1, 991185320), (2, 495592660), (4, 247796330), (5, 198237064), (8, 123898165), (10, 99118532), (20, 49559266), (31, 31973720), (40, 24779633), (62, 15986860), (124, 7993430), (155, 6394744), (248, 3996715), (310, 3197372), (620, 1598686), (1240, 799343)]