21403160

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{18451}}^1$

素因数の和:18491

約数の個数: 32

約数和(自身を含む): 49820400

約数和(自身を除く): 28417240

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 18451, 36902, 73804, 92255, 147608, 184510, 369020, 535079, 738040, 1070158, 2140316, 2675395, 4280632, 5350790, 10701580, 21403160]

約数ペア:

[(1, 21403160), (2, 10701580), (4, 5350790), (5, 4280632), (8, 2675395), (10, 2140316), (20, 1070158), (29, 738040), (40, 535079), (58, 369020), (116, 184510), (145, 147608), (232, 92255), (290, 73804), (580, 36902), (1160, 18451)]