21086850

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{257}}^1\times {\mathrm{547}}^1$

素因数の和:819

約数の個数: 48

約数和(自身を含む): 52594848

約数和(自身を除く): 31507998

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150, 257, 514, 547, 771, 1094, 1285, 1542, 1641, 2570, 2735, 3282, 3855, 5470, 6425, 7710, 8205, 12850, 13675, 16410, 19275, 27350, 38550, 41025, 82050, 140579, 281158, 421737, 702895, 843474, 1405790, 2108685, 3514475, 4217370, 7028950, 10543425, 21086850]

約数ペア:

[(1, 21086850), (2, 10543425), (3, 7028950), (5, 4217370), (6, 3514475), (10, 2108685), (15, 1405790), (25, 843474), (30, 702895), (50, 421737), (75, 281158), (150, 140579), (257, 82050), (514, 41025), (547, 38550), (771, 27350), (1094, 19275), (1285, 16410), (1542, 13675), (1641, 12850), (2570, 8205), (2735, 7710), (3282, 6425), (3855, 5470)]