21306540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{355109}}^1$

素因数の和:355121

約数の個数: 24

約数和(自身を含む): 59658480

約数和(自身を除く): 38351940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 355109, 710218, 1065327, 1420436, 1775545, 2130654, 3551090, 4261308, 5326635, 7102180, 10653270, 21306540]

約数ペア:

[(1, 21306540), (2, 10653270), (3, 7102180), (4, 5326635), (5, 4261308), (6, 3551090), (10, 2130654), (12, 1775545), (15, 1420436), (20, 1065327), (30, 710218), (60, 355109)]