18995480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{379}}^1$

素因数の和:576

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 30252520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 179, 280, 358, 379, 716, 758, 895, 1253, 1432, 1516, 1790, 1895, 2506, 2653, 3032, 3580, 3790, 5012, 5306, 6265, 7160, 7580, 10024, 10612, 12530, 13265, 15160, 21224, 25060, 26530, 50120, 53060, 67841, 106120, 135682, 271364, 339205, 474887, 542728, 678410, 949774, 1356820, 1899548, 2374435, 2713640, 3799096, 4748870, 9497740, 18995480]

約数ペア:

[(1, 18995480), (2, 9497740), (4, 4748870), (5, 3799096), (7, 2713640), (8, 2374435), (10, 1899548), (14, 1356820), (20, 949774), (28, 678410), (35, 542728), (40, 474887), (56, 339205), (70, 271364), (140, 135682), (179, 106120), (280, 67841), (358, 53060), (379, 50120), (716, 26530), (758, 25060), (895, 21224), (1253, 15160), (1432, 13265), (1516, 12530), (1790, 10612), (1895, 10024), (2506, 7580), (2653, 7160), (3032, 6265), (3580, 5306), (3790, 5012)]