21695240

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11069}}^1$

素因数の和:11094

約数の個数: 48

約数和(自身を含む): 56789100

約数和(自身を除く): 35093860

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 11069, 22138, 44276, 55345, 77483, 88552, 110690, 154966, 221380, 309932, 387415, 442760, 542381, 619864, 774830, 1084762, 1549660, 2169524, 2711905, 3099320, 4339048, 5423810, 10847620, 21695240]

約数ペア:

[(1, 21695240), (2, 10847620), (4, 5423810), (5, 4339048), (7, 3099320), (8, 2711905), (10, 2169524), (14, 1549660), (20, 1084762), (28, 774830), (35, 619864), (40, 542381), (49, 442760), (56, 387415), (70, 309932), (98, 221380), (140, 154966), (196, 110690), (245, 88552), (280, 77483), (392, 55345), (490, 44276), (980, 22138), (1960, 11069)]