21441080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31531}}^1$

素因数の和:31559

約数の個数: 32

約数和(自身を含む): 51081840

約数和(自身を除く): 29640760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31531, 63062, 126124, 157655, 252248, 315310, 536027, 630620, 1072054, 1261240, 2144108, 2680135, 4288216, 5360270, 10720540, 21441080]

約数ペア:

[(1, 21441080), (2, 10720540), (4, 5360270), (5, 4288216), (8, 2680135), (10, 2144108), (17, 1261240), (20, 1072054), (34, 630620), (40, 536027), (68, 315310), (85, 252248), (136, 157655), (170, 126124), (340, 63062), (680, 31531)]