21815794

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{641}}^1$

素因数の和:691

約数の個数: 64

約数和(自身を含む): 46593792

約数和(自身を除く): 24777998

約数列:

[1, 2, 7, 11, 13, 14, 17, 22, 26, 34, 77, 91, 119, 143, 154, 182, 187, 221, 238, 286, 374, 442, 641, 1001, 1282, 1309, 1547, 2002, 2431, 2618, 3094, 4487, 4862, 7051, 8333, 8974, 10897, 14102, 16666, 17017, 21794, 34034, 49357, 58331, 76279, 91663, 98714, 116662, 119867, 141661, 152558, 183326, 239734, 283322, 641641, 839069, 991627, 1283282, 1558271, 1678138, 1983254, 3116542, 10907897, 21815794]

約数ペア:

[(1, 21815794), (2, 10907897), (7, 3116542), (11, 1983254), (13, 1678138), (14, 1558271), (17, 1283282), (22, 991627), (26, 839069), (34, 641641), (77, 283322), (91, 239734), (119, 183326), (143, 152558), (154, 141661), (182, 119867), (187, 116662), (221, 98714), (238, 91663), (286, 76279), (374, 58331), (442, 49357), (641, 34034), (1001, 21794), (1282, 17017), (1309, 16666), (1547, 14102), (2002, 10897), (2431, 8974), (2618, 8333), (3094, 7051), (4487, 4862)]