20917536

素因数分解:

$2^5\times 3^1\times {\mathrm{109}}^1\times {\mathrm{1999}}^1$

素因数の和:2121

約数の個数: 48

約数和(自身を含む): 55440000

約数和(自身を除く): 34522464

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 109, 218, 327, 436, 654, 872, 1308, 1744, 1999, 2616, 3488, 3998, 5232, 5997, 7996, 10464, 11994, 15992, 23988, 31984, 47976, 63968, 95952, 191904, 217891, 435782, 653673, 871564, 1307346, 1743128, 2614692, 3486256, 5229384, 6972512, 10458768, 20917536]

約数ペア:

[(1, 20917536), (2, 10458768), (3, 6972512), (4, 5229384), (6, 3486256), (8, 2614692), (12, 1743128), (16, 1307346), (24, 871564), (32, 653673), (48, 435782), (96, 217891), (109, 191904), (218, 95952), (327, 63968), (436, 47976), (654, 31984), (872, 23988), (1308, 15992), (1744, 11994), (1999, 10464), (2616, 7996), (3488, 5997), (3998, 5232)]