21130452

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1181}}^1$

素因数の和:1269

約数の個数: 72

約数和(自身を含む): 61955712

約数和(自身を除く): 40825260

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 71, 84, 126, 142, 213, 252, 284, 426, 497, 639, 852, 994, 1181, 1278, 1491, 1988, 2362, 2556, 2982, 3543, 4473, 4724, 5964, 7086, 8267, 8946, 10629, 14172, 16534, 17892, 21258, 24801, 33068, 42516, 49602, 74403, 83851, 99204, 148806, 167702, 251553, 297612, 335404, 503106, 586957, 754659, 1006212, 1173914, 1509318, 1760871, 2347828, 3018636, 3521742, 5282613, 7043484, 10565226, 21130452]

約数ペア:

[(1, 21130452), (2, 10565226), (3, 7043484), (4, 5282613), (6, 3521742), (7, 3018636), (9, 2347828), (12, 1760871), (14, 1509318), (18, 1173914), (21, 1006212), (28, 754659), (36, 586957), (42, 503106), (63, 335404), (71, 297612), (84, 251553), (126, 167702), (142, 148806), (213, 99204), (252, 83851), (284, 74403), (426, 49602), (497, 42516), (639, 33068), (852, 24801), (994, 21258), (1181, 17892), (1278, 16534), (1491, 14172), (1988, 10629), (2362, 8946), (2556, 8267), (2982, 7086), (3543, 5964), (4473, 4724)]