21857150

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{317}}^1$

素因数の和:533

約数の個数: 48

約数和(自身を含む): 46845216

約数和(自身を除く): 24988066

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, 197, 317, 350, 394, 634, 985, 1379, 1585, 1970, 2219, 2758, 3170, 4438, 4925, 6895, 7925, 9850, 11095, 13790, 15850, 22190, 34475, 55475, 62449, 68950, 110950, 124898, 312245, 437143, 624490, 874286, 1561225, 2185715, 3122450, 4371430, 10928575, 21857150]

約数ペア:

[(1, 21857150), (2, 10928575), (5, 4371430), (7, 3122450), (10, 2185715), (14, 1561225), (25, 874286), (35, 624490), (50, 437143), (70, 312245), (175, 124898), (197, 110950), (317, 68950), (350, 62449), (394, 55475), (634, 34475), (985, 22190), (1379, 15850), (1585, 13790), (1970, 11095), (2219, 9850), (2758, 7925), (3170, 6895), (4438, 4925)]