81943880

素因数分解:

$2^3\times 5^1\times {\mathrm{1031}}^1\times {\mathrm{1987}}^1$

素因数の和:3029

約数の個数: 32

約数和(自身を含む): 184645440

約数和(自身を除く): 102701560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1031, 1987, 2062, 3974, 4124, 5155, 7948, 8248, 9935, 10310, 15896, 19870, 20620, 39740, 41240, 79480, 2048597, 4097194, 8194388, 10242985, 16388776, 20485970, 40971940, 81943880]

約数ペア:

[(1, 81943880), (2, 40971940), (4, 20485970), (5, 16388776), (8, 10242985), (10, 8194388), (20, 4097194), (40, 2048597), (1031, 79480), (1987, 41240), (2062, 39740), (3974, 20620), (4124, 19870), (5155, 15896), (7948, 10310), (8248, 9935)]