21012952

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{367}}^1\times {\mathrm{421}}^1$

素因数の和:811

約数の個数: 32

約数和(自身を含む): 41929920

約数和(自身を除く): 20916968

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 367, 421, 734, 842, 1468, 1684, 2936, 3368, 6239, 7157, 12478, 14314, 24956, 28628, 49912, 57256, 154507, 309014, 618028, 1236056, 2626619, 5253238, 10506476, 21012952]

約数ペア:

[(1, 21012952), (2, 10506476), (4, 5253238), (8, 2626619), (17, 1236056), (34, 618028), (68, 309014), (136, 154507), (367, 57256), (421, 49912), (734, 28628), (842, 24956), (1468, 14314), (1684, 12478), (2936, 7157), (3368, 6239)]