20644750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 45287424

約数和(自身を除く): 24642674

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 47, 50, 70, 94, 125, 175, 235, 250, 251, 329, 350, 470, 502, 658, 875, 1175, 1255, 1645, 1750, 1757, 2350, 2510, 3290, 3514, 5875, 6275, 8225, 8785, 11750, 11797, 12550, 16450, 17570, 23594, 31375, 41125, 43925, 58985, 62750, 82250, 82579, 87850, 117970, 165158, 219625, 294925, 412895, 439250, 589850, 825790, 1474625, 2064475, 2949250, 4128950, 10322375, 20644750]

約数ペア:

[(1, 20644750), (2, 10322375), (5, 4128950), (7, 2949250), (10, 2064475), (14, 1474625), (25, 825790), (35, 589850), (47, 439250), (50, 412895), (70, 294925), (94, 219625), (125, 165158), (175, 117970), (235, 87850), (250, 82579), (251, 82250), (329, 62750), (350, 58985), (470, 43925), (502, 41125), (658, 31375), (875, 23594), (1175, 17570), (1255, 16450), (1645, 12550), (1750, 11797), (1757, 11750), (2350, 8785), (2510, 8225), (3290, 6275), (3514, 5875)]