71906320

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20903}}^1$

素因数の和:20959

約数の個数: 40

約数和(自身を含む): 171078336

約数和(自身を除く): 99172016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 20903, 41806, 83612, 104515, 167224, 209030, 334448, 418060, 836120, 898829, 1672240, 1797658, 3595316, 4494145, 7190632, 8988290, 14381264, 17976580, 35953160, 71906320]

約数ペア:

[(1, 71906320), (2, 35953160), (4, 17976580), (5, 14381264), (8, 8988290), (10, 7190632), (16, 4494145), (20, 3595316), (40, 1797658), (43, 1672240), (80, 898829), (86, 836120), (172, 418060), (215, 334448), (344, 209030), (430, 167224), (688, 104515), (860, 83612), (1720, 41806), (3440, 20903)]