209546320

素因数分解:

$2^4\times 5^1\times {\mathrm{2619329}}^1$

素因数の和:2619342

約数の個数: 20

約数和(自身を含む): 487195380

約数和(自身を除く): 277649060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2619329, 5238658, 10477316, 13096645, 20954632, 26193290, 41909264, 52386580, 104773160, 209546320]

約数ペア:

[(1, 209546320), (2, 104773160), (4, 52386580), (5, 41909264), (8, 26193290), (10, 20954632), (16, 13096645), (20, 10477316), (40, 5238658), (80, 2619329)]