19899984

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31891}}^1$

素因数の和:31915

約数の個数: 40

約数和(自身を含む): 55364512

約数和(自身を除く): 35464528

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 31891, 63782, 95673, 127564, 191346, 255128, 382692, 414583, 510256, 765384, 829166, 1243749, 1530768, 1658332, 2487498, 3316664, 4974996, 6633328, 9949992, 19899984]

約数ペア:

[(1, 19899984), (2, 9949992), (3, 6633328), (4, 4974996), (6, 3316664), (8, 2487498), (12, 1658332), (13, 1530768), (16, 1243749), (24, 829166), (26, 765384), (39, 510256), (48, 414583), (52, 382692), (78, 255128), (104, 191346), (156, 127564), (208, 95673), (312, 63782), (624, 31891)]