21655250

素因数分解:

$2^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 44029440

約数和(自身を除く): 22374190

約数列:

[1, 2, 5, 10, 19, 25, 38, 47, 50, 94, 95, 97, 125, 190, 194, 235, 250, 470, 475, 485, 893, 950, 970, 1175, 1786, 1843, 2350, 2375, 2425, 3686, 4465, 4559, 4750, 4850, 5875, 8930, 9118, 9215, 11750, 12125, 18430, 22325, 22795, 24250, 44650, 45590, 46075, 86621, 92150, 111625, 113975, 173242, 223250, 227950, 230375, 433105, 460750, 569875, 866210, 1139750, 2165525, 4331050, 10827625, 21655250]

約数ペア:

[(1, 21655250), (2, 10827625), (5, 4331050), (10, 2165525), (19, 1139750), (25, 866210), (38, 569875), (47, 460750), (50, 433105), (94, 230375), (95, 227950), (97, 223250), (125, 173242), (190, 113975), (194, 111625), (235, 92150), (250, 86621), (470, 46075), (475, 45590), (485, 44650), (893, 24250), (950, 22795), (970, 22325), (1175, 18430), (1786, 12125), (1843, 11750), (2350, 9215), (2375, 9118), (2425, 8930), (3686, 5875), (4465, 4850), (4559, 4750)]