21177848

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{643}}^1$

素因数の和:851

約数の個数: 32

約数和(自身を含む): 41731200

約数和(自身を除く): 20553352

約数列:

[1, 2, 4, 8, 23, 46, 92, 179, 184, 358, 643, 716, 1286, 1432, 2572, 4117, 5144, 8234, 14789, 16468, 29578, 32936, 59156, 115097, 118312, 230194, 460388, 920776, 2647231, 5294462, 10588924, 21177848]

約数ペア:

[(1, 21177848), (2, 10588924), (4, 5294462), (8, 2647231), (23, 920776), (46, 460388), (92, 230194), (179, 118312), (184, 115097), (358, 59156), (643, 32936), (716, 29578), (1286, 16468), (1432, 14789), (2572, 8234), (4117, 5144)]