21657680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24611}}^1$

素因数の和:24635

約数の個数: 40

約数和(自身を含む): 54933984

約数和(自身を除く): 33276304

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24611, 49222, 98444, 123055, 196888, 246110, 270721, 393776, 492220, 541442, 984440, 1082884, 1353605, 1968880, 2165768, 2707210, 4331536, 5414420, 10828840, 21657680]

約数ペア:

[(1, 21657680), (2, 10828840), (4, 5414420), (5, 4331536), (8, 2707210), (10, 2165768), (11, 1968880), (16, 1353605), (20, 1082884), (22, 984440), (40, 541442), (44, 492220), (55, 393776), (80, 270721), (88, 246110), (110, 196888), (176, 123055), (220, 98444), (440, 49222), (880, 24611)]