71314640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20731}}^1$

素因数の和:20787

約数の個数: 40

約数和(自身を含む): 169670688

約数和(自身を除く): 98356048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 20731, 41462, 82924, 103655, 165848, 207310, 331696, 414620, 829240, 891433, 1658480, 1782866, 3565732, 4457165, 7131464, 8914330, 14262928, 17828660, 35657320, 71314640]

約数ペア:

[(1, 71314640), (2, 35657320), (4, 17828660), (5, 14262928), (8, 8914330), (10, 7131464), (16, 4457165), (20, 3565732), (40, 1782866), (43, 1658480), (80, 891433), (86, 829240), (172, 414620), (215, 331696), (344, 207310), (430, 165848), (688, 103655), (860, 82924), (1720, 41462), (3440, 20731)]