1681465

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:252

約数の個数: 16

約数和(自身を含む): 2120400

約数和(自身を除く): 438935

約数列:

[1, 5, 37, 61, 149, 185, 305, 745, 2257, 5513, 9089, 11285, 27565, 45445, 336293, 1681465]

約数ペア:

[(1, 1681465), (5, 336293), (37, 45445), (61, 27565), (149, 11285), (185, 9089), (305, 5513), (745, 2257)]