20639856

素因数分解:

$2^4\times 3^1\times {\mathrm{79}}^1\times {\mathrm{5443}}^1$

素因数の和:5533

約数の個数: 40

約数和(自身を含む): 54004480

約数和(自身を除く): 33364624

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 79, 158, 237, 316, 474, 632, 948, 1264, 1896, 3792, 5443, 10886, 16329, 21772, 32658, 43544, 65316, 87088, 130632, 261264, 429997, 859994, 1289991, 1719988, 2579982, 3439976, 5159964, 6879952, 10319928, 20639856]

約数ペア:

[(1, 20639856), (2, 10319928), (3, 6879952), (4, 5159964), (6, 3439976), (8, 2579982), (12, 1719988), (16, 1289991), (24, 859994), (48, 429997), (79, 261264), (158, 130632), (237, 87088), (316, 65316), (474, 43544), (632, 32658), (948, 21772), (1264, 16329), (1896, 10886), (3792, 5443)]