21855660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{563}}^1\times {\mathrm{647}}^1$

素因数の和:1222

約数の個数: 48

約数和(自身を含む): 61399296

約数和(自身を除く): 39543636

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 563, 647, 1126, 1294, 1689, 1941, 2252, 2588, 2815, 3235, 3378, 3882, 5630, 6470, 6756, 7764, 8445, 9705, 11260, 12940, 16890, 19410, 33780, 38820, 364261, 728522, 1092783, 1457044, 1821305, 2185566, 3642610, 4371132, 5463915, 7285220, 10927830, 21855660]

約数ペア:

[(1, 21855660), (2, 10927830), (3, 7285220), (4, 5463915), (5, 4371132), (6, 3642610), (10, 2185566), (12, 1821305), (15, 1457044), (20, 1092783), (30, 728522), (60, 364261), (563, 38820), (647, 33780), (1126, 19410), (1294, 16890), (1689, 12940), (1941, 11260), (2252, 9705), (2588, 8445), (2815, 7764), (3235, 6756), (3378, 6470), (3882, 5630)]