20798648

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{881}}^1$

素因数の和:1127

約数の個数: 32

約数和(自身を含む): 42230160

約数和(自身を除く): 21431512

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 227, 454, 881, 908, 1762, 1816, 2951, 3524, 5902, 7048, 11453, 11804, 22906, 23608, 45812, 91624, 199987, 399974, 799948, 1599896, 2599831, 5199662, 10399324, 20798648]

約数ペア:

[(1, 20798648), (2, 10399324), (4, 5199662), (8, 2599831), (13, 1599896), (26, 799948), (52, 399974), (104, 199987), (227, 91624), (454, 45812), (881, 23608), (908, 22906), (1762, 11804), (1816, 11453), (2951, 7048), (3524, 5902)]