21611420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3739}}^1$

素因数の和:3782

約数の個数: 36

約数和(自身を含む): 48223560

約数和(自身を除く): 26612140

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3739, 5780, 7478, 14956, 18695, 37390, 63563, 74780, 127126, 254252, 317815, 635630, 1080571, 1271260, 2161142, 4322284, 5402855, 10805710, 21611420]

約数ペア:

[(1, 21611420), (2, 10805710), (4, 5402855), (5, 4322284), (10, 2161142), (17, 1271260), (20, 1080571), (34, 635630), (68, 317815), (85, 254252), (170, 127126), (289, 74780), (340, 63563), (578, 37390), (1156, 18695), (1445, 14956), (2890, 7478), (3739, 5780)]