28731320

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{3221}}^1$

素因数の和:3455

約数の個数: 32

約数和(自身を含む): 64955520

約数和(自身を除く): 36224200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 3221, 4460, 6442, 8920, 12884, 16105, 25768, 32210, 64420, 128840, 718283, 1436566, 2873132, 3591415, 5746264, 7182830, 14365660, 28731320]

約数ペア:

[(1, 28731320), (2, 14365660), (4, 7182830), (5, 5746264), (8, 3591415), (10, 2873132), (20, 1436566), (40, 718283), (223, 128840), (446, 64420), (892, 32210), (1115, 25768), (1784, 16105), (2230, 12884), (3221, 8920), (4460, 6442)]