388640360

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{36943}}^1$

素因数の和:37217

約数の個数: 32

約数和(自身を含む): 877789440

約数和(自身を除く): 489149080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 5260, 10520, 36943, 73886, 147772, 184715, 295544, 369430, 738860, 1477720, 9716009, 19432018, 38864036, 48580045, 77728072, 97160090, 194320180, 388640360]

約数ペア:

[(1, 388640360), (2, 194320180), (4, 97160090), (5, 77728072), (8, 48580045), (10, 38864036), (20, 19432018), (40, 9716009), (263, 1477720), (526, 738860), (1052, 369430), (1315, 295544), (2104, 184715), (2630, 147772), (5260, 73886), (10520, 36943)]