21139428

素因数分解:

$2^2\times 3^1\times {\mathrm{61}}^1\times {\mathrm{28879}}^1$

素因数の和:28947

約数の個数: 24

約数和(自身を含む): 50135680

約数和(自身を除く): 28996252

約数列:

[1, 2, 3, 4, 6, 12, 61, 122, 183, 244, 366, 732, 28879, 57758, 86637, 115516, 173274, 346548, 1761619, 3523238, 5284857, 7046476, 10569714, 21139428]

約数ペア:

[(1, 21139428), (2, 10569714), (3, 7046476), (4, 5284857), (6, 3523238), (12, 1761619), (61, 346548), (122, 173274), (183, 115516), (244, 86637), (366, 57758), (732, 28879)]