30720580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{449}}^1$

素因数の和:780

約数の個数: 48

約数和(自身を含む): 70761600

約数和(自身を除く): 40041020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 311, 449, 622, 898, 1244, 1555, 1796, 2245, 3110, 3421, 4490, 4939, 6220, 6842, 8980, 9878, 13684, 17105, 19756, 24695, 34210, 49390, 68420, 98780, 139639, 279278, 558556, 698195, 1396390, 1536029, 2792780, 3072058, 6144116, 7680145, 15360290, 30720580]

約数ペア:

[(1, 30720580), (2, 15360290), (4, 7680145), (5, 6144116), (10, 3072058), (11, 2792780), (20, 1536029), (22, 1396390), (44, 698195), (55, 558556), (110, 279278), (220, 139639), (311, 98780), (449, 68420), (622, 49390), (898, 34210), (1244, 24695), (1555, 19756), (1796, 17105), (2245, 13684), (3110, 9878), (3421, 8980), (4490, 6842), (4939, 6220)]