15919700

素因数分解:

$2^2\times 5^2\times {\mathrm{397}}^1\times {\mathrm{401}}^1$

素因数の和:812

約数の個数: 36

約数和(自身を含む): 34719132

約数和(自身を除く): 18799432

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 397, 401, 794, 802, 1588, 1604, 1985, 2005, 3970, 4010, 7940, 8020, 9925, 10025, 19850, 20050, 39700, 40100, 159197, 318394, 636788, 795985, 1591970, 3183940, 3979925, 7959850, 15919700]

約数ペア:

[(1, 15919700), (2, 7959850), (4, 3979925), (5, 3183940), (10, 1591970), (20, 795985), (25, 636788), (50, 318394), (100, 159197), (397, 40100), (401, 39700), (794, 20050), (802, 19850), (1588, 10025), (1604, 9925), (1985, 8020), (2005, 7940), (3970, 4010)]