21000888016

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{35474473}}^1$

素因数の和:35474518

約数の個数: 20

約数和(自身を含む): 41788930372

約数和(自身を除く): 20788042356

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 35474473, 70948946, 141897892, 283795784, 567591568, 1312555501, 2625111002, 5250222004, 10500444008, 21000888016]

約数ペア:

[(1, 21000888016), (2, 10500444008), (4, 5250222004), (8, 2625111002), (16, 1312555501), (37, 567591568), (74, 283795784), (148, 141897892), (296, 70948946), (592, 35474473)]