21813876

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{809}}^1$

素因数の和:933

約数の個数: 72

約数和(自身を含む): 63685440

約数和(自身を除く): 41871564

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 107, 126, 214, 252, 321, 428, 642, 749, 809, 963, 1284, 1498, 1618, 1926, 2247, 2427, 2996, 3236, 3852, 4494, 4854, 5663, 6741, 7281, 8988, 9708, 11326, 13482, 14562, 16989, 22652, 26964, 29124, 33978, 50967, 67956, 86563, 101934, 173126, 203868, 259689, 346252, 519378, 605941, 779067, 1038756, 1211882, 1558134, 1817823, 2423764, 3116268, 3635646, 5453469, 7271292, 10906938, 21813876]

約数ペア:

[(1, 21813876), (2, 10906938), (3, 7271292), (4, 5453469), (6, 3635646), (7, 3116268), (9, 2423764), (12, 1817823), (14, 1558134), (18, 1211882), (21, 1038756), (28, 779067), (36, 605941), (42, 519378), (63, 346252), (84, 259689), (107, 203868), (126, 173126), (214, 101934), (252, 86563), (321, 67956), (428, 50967), (642, 33978), (749, 29124), (809, 26964), (963, 22652), (1284, 16989), (1498, 14562), (1618, 13482), (1926, 11326), (2247, 9708), (2427, 8988), (2996, 7281), (3236, 6741), (3852, 5663), (4494, 4854)]