20897360

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23747}}^1$

素因数の和:23771

約数の個数: 40

約数和(自身を含む): 53005536

約数和(自身を除く): 32108176

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23747, 47494, 94988, 118735, 189976, 237470, 261217, 379952, 474940, 522434, 949880, 1044868, 1306085, 1899760, 2089736, 2612170, 4179472, 5224340, 10448680, 20897360]

約数ペア:

[(1, 20897360), (2, 10448680), (4, 5224340), (5, 4179472), (8, 2612170), (10, 2089736), (11, 1899760), (16, 1306085), (20, 1044868), (22, 949880), (40, 522434), (44, 474940), (55, 379952), (80, 261217), (88, 237470), (110, 189976), (176, 118735), (220, 94988), (440, 47494), (880, 23747)]