28144420

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{521}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 61650288

約数和(自身を除く): 33505868

約数列:

[1, 2, 4, 5, 10, 20, 37, 73, 74, 146, 148, 185, 292, 365, 370, 521, 730, 740, 1042, 1460, 2084, 2605, 2701, 5210, 5402, 10420, 10804, 13505, 19277, 27010, 38033, 38554, 54020, 76066, 77108, 96385, 152132, 190165, 192770, 380330, 385540, 760660, 1407221, 2814442, 5628884, 7036105, 14072210, 28144420]

約数ペア:

[(1, 28144420), (2, 14072210), (4, 7036105), (5, 5628884), (10, 2814442), (20, 1407221), (37, 760660), (73, 385540), (74, 380330), (146, 192770), (148, 190165), (185, 152132), (292, 96385), (365, 77108), (370, 76066), (521, 54020), (730, 38554), (740, 38033), (1042, 27010), (1460, 19277), (2084, 13505), (2605, 10804), (2701, 10420), (5210, 5402)]