12171995

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:128

約数の個数: 32

約数和(自身を含む): 16865280

約数和(自身を除く): 4693285

約数列:

[1, 5, 11, 31, 55, 59, 121, 155, 295, 341, 605, 649, 1331, 1705, 1829, 3245, 3751, 6655, 7139, 9145, 18755, 20119, 35695, 41261, 78529, 100595, 206305, 221309, 392645, 1106545, 2434399, 12171995]

約数ペア:

[(1, 12171995), (5, 2434399), (11, 1106545), (31, 392645), (55, 221309), (59, 206305), (121, 100595), (155, 78529), (295, 41261), (341, 35695), (605, 20119), (649, 18755), (1331, 9145), (1705, 7139), (1829, 6655), (3245, 3751)]