20465904

素因数分解:

$2^4\times 3^1\times {\mathrm{647}}^1\times {\mathrm{659}}^1$

素因数の和:1317

約数の個数: 40

約数和(自身を含む): 53032320

約数和(自身を除く): 32566416

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 647, 659, 1294, 1318, 1941, 1977, 2588, 2636, 3882, 3954, 5176, 5272, 7764, 7908, 10352, 10544, 15528, 15816, 31056, 31632, 426373, 852746, 1279119, 1705492, 2558238, 3410984, 5116476, 6821968, 10232952, 20465904]

約数ペア:

[(1, 20465904), (2, 10232952), (3, 6821968), (4, 5116476), (6, 3410984), (8, 2558238), (12, 1705492), (16, 1279119), (24, 852746), (48, 426373), (647, 31632), (659, 31056), (1294, 15816), (1318, 15528), (1941, 10544), (1977, 10352), (2588, 7908), (2636, 7764), (3882, 5272), (3954, 5176)]