21378548

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{2137}}^1$

素因数の和:2243

約数の個数: 24

約数和(自身を含む): 38971464

約数和(自身を除く): 17592916

約数列:

[1, 2, 4, 41, 61, 82, 122, 164, 244, 2137, 2501, 4274, 5002, 8548, 10004, 87617, 130357, 175234, 260714, 350468, 521428, 5344637, 10689274, 21378548]

約数ペア:

[(1, 21378548), (2, 10689274), (4, 5344637), (41, 521428), (61, 350468), (82, 260714), (122, 175234), (164, 130357), (244, 87617), (2137, 10004), (2501, 8548), (4274, 5002)]