20669416

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{421}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 43411140

約数和(自身を除く): 22741724

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 361, 421, 646, 722, 842, 1292, 1444, 1684, 2584, 2888, 3368, 6137, 7157, 7999, 12274, 14314, 15998, 24548, 28628, 31996, 49096, 57256, 63992, 135983, 151981, 271966, 303962, 543932, 607924, 1087864, 1215848, 2583677, 5167354, 10334708, 20669416]

約数ペア:

[(1, 20669416), (2, 10334708), (4, 5167354), (8, 2583677), (17, 1215848), (19, 1087864), (34, 607924), (38, 543932), (68, 303962), (76, 271966), (136, 151981), (152, 135983), (323, 63992), (361, 57256), (421, 49096), (646, 31996), (722, 28628), (842, 24548), (1292, 15998), (1444, 14314), (1684, 12274), (2584, 7999), (2888, 7157), (3368, 6137)]