399316455

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1\times {\mathrm{1373}}^1$

素因数の和:1688

約数の個数: 48

約数和(自身を含む): 725340096

約数和(自身を除く): 326023641

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 281, 345, 843, 1035, 1373, 1405, 2529, 4119, 4215, 6463, 6865, 12357, 12645, 19389, 20595, 31579, 32315, 58167, 61785, 94737, 96945, 157895, 284211, 290835, 385813, 473685, 1157439, 1421055, 1929065, 3472317, 5787195, 8873699, 17361585, 26621097, 44368495, 79863291, 133105485, 399316455]

約数ペア:

[(1, 399316455), (3, 133105485), (5, 79863291), (9, 44368495), (15, 26621097), (23, 17361585), (45, 8873699), (69, 5787195), (115, 3472317), (207, 1929065), (281, 1421055), (345, 1157439), (843, 473685), (1035, 385813), (1373, 290835), (1405, 284211), (2529, 157895), (4119, 96945), (4215, 94737), (6463, 61785), (6865, 58167), (12357, 32315), (12645, 31579), (19389, 20595)]