21788390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9859}}^1$

素因数の和:9896

約数の個数: 32

約数和(自身を含む): 44724960

約数和(自身を除く): 22936570

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9859, 19718, 49295, 98590, 128167, 167603, 256334, 335206, 640835, 838015, 1281670, 1676030, 2178839, 4357678, 10894195, 21788390]

約数ペア:

[(1, 21788390), (2, 10894195), (5, 4357678), (10, 2178839), (13, 1676030), (17, 1281670), (26, 838015), (34, 640835), (65, 335206), (85, 256334), (130, 167603), (170, 128167), (221, 98590), (442, 49295), (1105, 19718), (2210, 9859)]