21996664

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{337}}^1$

素因数の和:583

約数の個数: 32

約数和(自身を含む): 42588000

約数和(自身を除く): 20591336

約数列:

[1, 2, 4, 8, 41, 82, 164, 199, 328, 337, 398, 674, 796, 1348, 1592, 2696, 8159, 13817, 16318, 27634, 32636, 55268, 65272, 67063, 110536, 134126, 268252, 536504, 2749583, 5499166, 10998332, 21996664]

約数ペア:

[(1, 21996664), (2, 10998332), (4, 5499166), (8, 2749583), (41, 536504), (82, 268252), (164, 134126), (199, 110536), (328, 67063), (337, 65272), (398, 55268), (674, 32636), (796, 27634), (1348, 16318), (1592, 13817), (2696, 8159)]