21686520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1423}}^1$

素因数の和:1564

約数の個数: 64

約数和(自身を含む): 65617920

約数和(自身を除く): 43931400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 127, 254, 381, 508, 635, 762, 1016, 1270, 1423, 1524, 1905, 2540, 2846, 3048, 3810, 4269, 5080, 5692, 7115, 7620, 8538, 11384, 14230, 15240, 17076, 21345, 28460, 34152, 42690, 56920, 85380, 170760, 180721, 361442, 542163, 722884, 903605, 1084326, 1445768, 1807210, 2168652, 2710815, 3614420, 4337304, 5421630, 7228840, 10843260, 21686520]

約数ペア:

[(1, 21686520), (2, 10843260), (3, 7228840), (4, 5421630), (5, 4337304), (6, 3614420), (8, 2710815), (10, 2168652), (12, 1807210), (15, 1445768), (20, 1084326), (24, 903605), (30, 722884), (40, 542163), (60, 361442), (120, 180721), (127, 170760), (254, 85380), (381, 56920), (508, 42690), (635, 34152), (762, 28460), (1016, 21345), (1270, 17076), (1423, 15240), (1524, 14230), (1905, 11384), (2540, 8538), (2846, 7620), (3048, 7115), (3810, 5692), (4269, 5080)]