21979850

素因数分解:

$2^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{109}}^2$

素因数の和:267

約数の個数: 36

約数和(自身を含む): 42376194

約数和(自身を除く): 20396344

約数列:

[1, 2, 5, 10, 25, 37, 50, 74, 109, 185, 218, 370, 545, 925, 1090, 1850, 2725, 4033, 5450, 8066, 11881, 20165, 23762, 40330, 59405, 100825, 118810, 201650, 297025, 439597, 594050, 879194, 2197985, 4395970, 10989925, 21979850]

約数ペア:

[(1, 21979850), (2, 10989925), (5, 4395970), (10, 2197985), (25, 879194), (37, 594050), (50, 439597), (74, 297025), (109, 201650), (185, 118810), (218, 100825), (370, 59405), (545, 40330), (925, 23762), (1090, 20165), (1850, 11881), (2725, 8066), (4033, 5450)]