20899924

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{59}}^2\times {\mathrm{79}}^1$

素因数の和:220

約数の個数: 36

約数和(自身を含む): 39659200

約数和(自身を除く): 18759276

約数列:

[1, 2, 4, 19, 38, 59, 76, 79, 118, 158, 236, 316, 1121, 1501, 2242, 3002, 3481, 4484, 4661, 6004, 6962, 9322, 13924, 18644, 66139, 88559, 132278, 177118, 264556, 274999, 354236, 549998, 1099996, 5224981, 10449962, 20899924]

約数ペア:

[(1, 20899924), (2, 10449962), (4, 5224981), (19, 1099996), (38, 549998), (59, 354236), (76, 274999), (79, 264556), (118, 177118), (158, 132278), (236, 88559), (316, 66139), (1121, 18644), (1501, 13924), (2242, 9322), (3002, 6962), (3481, 6004), (4484, 4661)]