21965076

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{863}}^1$

素因数の和:981

約数の個数: 72

約数和(自身を含む): 64157184

約数和(自身を除く): 42192108

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 101, 126, 202, 252, 303, 404, 606, 707, 863, 909, 1212, 1414, 1726, 1818, 2121, 2589, 2828, 3452, 3636, 4242, 5178, 6041, 6363, 7767, 8484, 10356, 12082, 12726, 15534, 18123, 24164, 25452, 31068, 36246, 54369, 72492, 87163, 108738, 174326, 217476, 261489, 348652, 522978, 610141, 784467, 1045956, 1220282, 1568934, 1830423, 2440564, 3137868, 3660846, 5491269, 7321692, 10982538, 21965076]

約数ペア:

[(1, 21965076), (2, 10982538), (3, 7321692), (4, 5491269), (6, 3660846), (7, 3137868), (9, 2440564), (12, 1830423), (14, 1568934), (18, 1220282), (21, 1045956), (28, 784467), (36, 610141), (42, 522978), (63, 348652), (84, 261489), (101, 217476), (126, 174326), (202, 108738), (252, 87163), (303, 72492), (404, 54369), (606, 36246), (707, 31068), (863, 25452), (909, 24164), (1212, 18123), (1414, 15534), (1726, 12726), (1818, 12082), (2121, 10356), (2589, 8484), (2828, 7767), (3452, 6363), (3636, 6041), (4242, 5178)]