18381896

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 40506480

約数和(自身を除く): 22124584

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 37, 52, 68, 74, 104, 136, 148, 221, 281, 296, 442, 481, 562, 629, 884, 962, 1124, 1258, 1768, 1924, 2248, 2516, 3653, 3848, 4777, 5032, 7306, 8177, 9554, 10397, 14612, 16354, 19108, 20794, 29224, 32708, 38216, 41588, 62101, 65416, 83176, 124202, 135161, 176749, 248404, 270322, 353498, 496808, 540644, 706996, 1081288, 1413992, 2297737, 4595474, 9190948, 18381896]

約数ペア:

[(1, 18381896), (2, 9190948), (4, 4595474), (8, 2297737), (13, 1413992), (17, 1081288), (26, 706996), (34, 540644), (37, 496808), (52, 353498), (68, 270322), (74, 248404), (104, 176749), (136, 135161), (148, 124202), (221, 83176), (281, 65416), (296, 62101), (442, 41588), (481, 38216), (562, 32708), (629, 29224), (884, 20794), (962, 19108), (1124, 16354), (1258, 14612), (1768, 10397), (1924, 9554), (2248, 8177), (2516, 7306), (3653, 5032), (3848, 4777)]