19871656

素因数分解:

$2^3\times 7^2\times {\mathrm{163}}^1\times {\mathrm{311}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 43748640

約数和(自身を除く): 23876984

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 163, 196, 311, 326, 392, 622, 652, 1141, 1244, 1304, 2177, 2282, 2488, 4354, 4564, 7987, 8708, 9128, 15239, 15974, 17416, 30478, 31948, 50693, 60956, 63896, 101386, 121912, 202772, 354851, 405544, 709702, 1419404, 2483957, 2838808, 4967914, 9935828, 19871656]

約数ペア:

[(1, 19871656), (2, 9935828), (4, 4967914), (7, 2838808), (8, 2483957), (14, 1419404), (28, 709702), (49, 405544), (56, 354851), (98, 202772), (163, 121912), (196, 101386), (311, 63896), (326, 60956), (392, 50693), (622, 31948), (652, 30478), (1141, 17416), (1244, 15974), (1304, 15239), (2177, 9128), (2282, 8708), (2488, 7987), (4354, 4564)]