21000578416

素因数分解:

$2^4\times {\mathrm{107}}^1\times {\mathrm{1361}}^1\times {\mathrm{9013}}^1$

素因数の和:10489

約数の個数: 40

約数和(自身を含む): 41103623664

約数和(自身を除く): 20103045248

約数列:

[1, 2, 4, 8, 16, 107, 214, 428, 856, 1361, 1712, 2722, 5444, 9013, 10888, 18026, 21776, 36052, 72104, 144208, 145627, 291254, 582508, 964391, 1165016, 1928782, 2330032, 3857564, 7715128, 12266693, 15430256, 24533386, 49066772, 98133544, 196267088, 1312536151, 2625072302, 5250144604, 10500289208, 21000578416]

約数ペア:

[(1, 21000578416), (2, 10500289208), (4, 5250144604), (8, 2625072302), (16, 1312536151), (107, 196267088), (214, 98133544), (428, 49066772), (856, 24533386), (1361, 15430256), (1712, 12266693), (2722, 7715128), (5444, 3857564), (9013, 2330032), (10888, 1928782), (18026, 1165016), (21776, 964391), (36052, 582508), (72104, 291254), (144208, 145627)]