19917427184

素因数分解:

$2^4\times {\mathrm{3089}}^1\times {\mathrm{402991}}^1$

素因数の和:406088

約数の個数: 20

約数和(自身を含む): 38602603680

約数和(自身を除く): 18685176496

約数列:

[1, 2, 4, 8, 16, 3089, 6178, 12356, 24712, 49424, 402991, 805982, 1611964, 3223928, 6447856, 1244839199, 2489678398, 4979356796, 9958713592, 19917427184]

約数ペア:

[(1, 19917427184), (2, 9958713592), (4, 4979356796), (8, 2489678398), (16, 1244839199), (3089, 6447856), (6178, 3223928), (12356, 1611964), (24712, 805982), (49424, 402991)]