21064360

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30977}}^1$

素因数の和:31005

約数の個数: 32

約数和(自身を含む): 50184360

約数和(自身を除く): 29120000

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30977, 61954, 123908, 154885, 247816, 309770, 526609, 619540, 1053218, 1239080, 2106436, 2633045, 4212872, 5266090, 10532180, 21064360]

約数ペア:

[(1, 21064360), (2, 10532180), (4, 5266090), (5, 4212872), (8, 2633045), (10, 2106436), (17, 1239080), (20, 1053218), (34, 619540), (40, 526609), (68, 309770), (85, 247816), (136, 154885), (170, 123908), (340, 61954), (680, 30977)]