20458672

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2399}}^1$

素因数の和:2461

約数の個数: 40

約数和(自身を含む): 43747200

約数和(自身を除く): 23288528

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 2132, 2399, 4264, 4798, 8528, 9596, 19192, 31187, 38384, 62374, 98359, 124748, 196718, 249496, 393436, 498992, 786872, 1278667, 1573744, 2557334, 5114668, 10229336, 20458672]

約数ペア:

[(1, 20458672), (2, 10229336), (4, 5114668), (8, 2557334), (13, 1573744), (16, 1278667), (26, 786872), (41, 498992), (52, 393436), (82, 249496), (104, 196718), (164, 124748), (208, 98359), (328, 62374), (533, 38384), (656, 31187), (1066, 19192), (2132, 9596), (2399, 8528), (4264, 4798)]