405936760

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{128461}}^1$

素因数の和:128551

約数の個数: 32

約数和(自身を含む): 924926400

約数和(自身を除く): 518989640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 128461, 256922, 513844, 642305, 1027688, 1284610, 2569220, 5138440, 10148419, 20296838, 40593676, 50742095, 81187352, 101484190, 202968380, 405936760]

約数ペア:

[(1, 405936760), (2, 202968380), (4, 101484190), (5, 81187352), (8, 50742095), (10, 40593676), (20, 20296838), (40, 10148419), (79, 5138440), (158, 2569220), (316, 1284610), (395, 1027688), (632, 642305), (790, 513844), (1580, 256922), (3160, 128461)]