221495380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{38321}}^1$

素因数の和:38364

約数の個数: 36

約数和(自身を含む): 494123868

約数和(自身を除く): 272628488

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 5780, 38321, 76642, 153284, 191605, 383210, 651457, 766420, 1302914, 2605828, 3257285, 6514570, 11074769, 13029140, 22149538, 44299076, 55373845, 110747690, 221495380]

約数ペア:

[(1, 221495380), (2, 110747690), (4, 55373845), (5, 44299076), (10, 22149538), (17, 13029140), (20, 11074769), (34, 6514570), (68, 3257285), (85, 2605828), (170, 1302914), (289, 766420), (340, 651457), (578, 383210), (1156, 191605), (1445, 153284), (2890, 76642), (5780, 38321)]