40387960

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12781}}^1$

素因数の和:12871

約数の個数: 32

約数和(自身を含む): 92030400

約数和(自身を除く): 51642440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 12781, 25562, 51124, 63905, 102248, 127810, 255620, 511240, 1009699, 2019398, 4038796, 5048495, 8077592, 10096990, 20193980, 40387960]

約数ペア:

[(1, 40387960), (2, 20193980), (4, 10096990), (5, 8077592), (8, 5048495), (10, 4038796), (20, 2019398), (40, 1009699), (79, 511240), (158, 255620), (316, 127810), (395, 102248), (632, 63905), (790, 51124), (1580, 25562), (3160, 12781)]