21419265

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1489}}^1$

素因数の和:1641

約数の個数: 32

約数和(自身を含む): 39479040

約数和(自身を除く): 18059775

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 137, 411, 685, 959, 1489, 2055, 2877, 4467, 4795, 7445, 10423, 14385, 22335, 31269, 52115, 156345, 203993, 611979, 1019965, 1427951, 3059895, 4283853, 7139755, 21419265]

約数ペア:

[(1, 21419265), (3, 7139755), (5, 4283853), (7, 3059895), (15, 1427951), (21, 1019965), (35, 611979), (105, 203993), (137, 156345), (411, 52115), (685, 31269), (959, 22335), (1489, 14385), (2055, 10423), (2877, 7445), (4467, 4795)]