21680970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1117}}^1$

素因数の和:1774

約数の個数: 32

約数和(自身を含む): 52161408

約数和(自身を除く): 30480438

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 647, 1117, 1294, 1941, 2234, 3235, 3351, 3882, 5585, 6470, 6702, 9705, 11170, 16755, 19410, 33510, 722699, 1445398, 2168097, 3613495, 4336194, 7226990, 10840485, 21680970]

約数ペア:

[(1, 21680970), (2, 10840485), (3, 7226990), (5, 4336194), (6, 3613495), (10, 2168097), (15, 1445398), (30, 722699), (647, 33510), (1117, 19410), (1294, 16755), (1941, 11170), (2234, 9705), (3235, 6702), (3351, 6470), (3882, 5585)]