19640325

素因数分解:

$3^1\times 5^2\times {\mathrm{307}}^1\times {\mathrm{853}}^1$

素因数の和:1173

約数の個数: 24

約数和(自身を含む): 32615968

約数和(自身を除く): 12975643

約数列:

[1, 3, 5, 15, 25, 75, 307, 853, 921, 1535, 2559, 4265, 4605, 7675, 12795, 21325, 23025, 63975, 261871, 785613, 1309355, 3928065, 6546775, 19640325]

約数ペア:

[(1, 19640325), (3, 6546775), (5, 3928065), (15, 1309355), (25, 785613), (75, 261871), (307, 63975), (853, 23025), (921, 21325), (1535, 12795), (2559, 7675), (4265, 4605)]