21712360

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6871}}^1$

素因数の和:6961

約数の個数: 32

約数和(自身を含む): 49478400

約数和(自身を除く): 27766040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6871, 13742, 27484, 34355, 54968, 68710, 137420, 274840, 542809, 1085618, 2171236, 2714045, 4342472, 5428090, 10856180, 21712360]

約数ペア:

[(1, 21712360), (2, 10856180), (4, 5428090), (5, 4342472), (8, 2714045), (10, 2171236), (20, 1085618), (40, 542809), (79, 274840), (158, 137420), (316, 68710), (395, 54968), (632, 34355), (790, 27484), (1580, 13742), (3160, 6871)]