781077890

素因数分解:

$2^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{159079}}^1$

素因数の和:159577

約数の個数: 16

約数和(自身を含む): 1408812480

約数和(自身を除く): 627734590

約数列:

[1, 2, 5, 10, 491, 982, 2455, 4910, 159079, 318158, 795395, 1590790, 78107789, 156215578, 390538945, 781077890]

約数ペア:

[(1, 781077890), (2, 390538945), (5, 156215578), (10, 78107789), (491, 1590790), (982, 795395), (2455, 318158), (4910, 159079)]