21453160

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1747}}^1$

素因数の和:2065

約数の個数: 32

約数和(自身を含む): 48454560

約数和(自身を除く): 27001400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 1747, 2456, 3070, 3494, 6140, 6988, 8735, 12280, 13976, 17470, 34940, 69880, 536329, 1072658, 2145316, 2681645, 4290632, 5363290, 10726580, 21453160]

約数ペア:

[(1, 21453160), (2, 10726580), (4, 5363290), (5, 4290632), (8, 2681645), (10, 2145316), (20, 1072658), (40, 536329), (307, 69880), (614, 34940), (1228, 17470), (1535, 13976), (1747, 12280), (2456, 8735), (3070, 6988), (3494, 6140)]