21105510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{4481}}^1$

素因数の和:4648

約数の個数: 32

約数和(自身を含む): 50987232

約数和(自身を除く): 29881722

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 157, 314, 471, 785, 942, 1570, 2355, 4481, 4710, 8962, 13443, 22405, 26886, 44810, 67215, 134430, 703517, 1407034, 2110551, 3517585, 4221102, 7035170, 10552755, 21105510]

約数ペア:

[(1, 21105510), (2, 10552755), (3, 7035170), (5, 4221102), (6, 3517585), (10, 2110551), (15, 1407034), (30, 703517), (157, 134430), (314, 67215), (471, 44810), (785, 26886), (942, 22405), (1570, 13443), (2355, 8962), (4481, 4710)]