21842275

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9601}}^1$

素因数の和:9631

約数の個数: 24

約数和(自身を含む): 33338144

約数和(自身を除く): 11495869

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 9601, 48005, 67207, 124813, 240025, 336035, 624065, 873691, 1680175, 3120325, 4368455, 21842275]

約数ペア:

[(1, 21842275), (5, 4368455), (7, 3120325), (13, 1680175), (25, 873691), (35, 624065), (65, 336035), (91, 240025), (175, 124813), (325, 67207), (455, 48005), (2275, 9601)]