21475245

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{829}}^1$

素因数の和:1005

約数の個数: 32

約数和(自身を含む): 37768320

約数和(自身を除く): 16293075

約数列:

[1, 3, 5, 11, 15, 33, 55, 157, 165, 471, 785, 829, 1727, 2355, 2487, 4145, 5181, 8635, 9119, 12435, 25905, 27357, 45595, 130153, 136785, 390459, 650765, 1431683, 1952295, 4295049, 7158415, 21475245]

約数ペア:

[(1, 21475245), (3, 7158415), (5, 4295049), (11, 1952295), (15, 1431683), (33, 650765), (55, 390459), (157, 136785), (165, 130153), (471, 45595), (785, 27357), (829, 25905), (1727, 12435), (2355, 9119), (2487, 8635), (4145, 5181)]