19970361

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1$

素因数の和:322

約数の個数: 32

約数和(自身を含む): 30750720

約数和(自身を除く): 10780359

約数列:

[1, 3, 9, 27, 43, 103, 129, 167, 309, 387, 501, 927, 1161, 1503, 2781, 4429, 4509, 7181, 13287, 17201, 21543, 39861, 51603, 64629, 119583, 154809, 193887, 464427, 739643, 2218929, 6656787, 19970361]

約数ペア:

[(1, 19970361), (3, 6656787), (9, 2218929), (27, 739643), (43, 464427), (103, 193887), (129, 154809), (167, 119583), (309, 64629), (387, 51603), (501, 39861), (927, 21543), (1161, 17201), (1503, 13287), (2781, 7181), (4429, 4509)]