18136720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{233}}^1$

素因数の和:392

約数の個数: 80

約数和(自身を含む): 48746880

約数和(自身を除く): 30610160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 139, 140, 233, 278, 280, 466, 556, 560, 695, 932, 973, 1112, 1165, 1390, 1631, 1864, 1946, 2224, 2330, 2780, 3262, 3728, 3892, 4660, 4865, 5560, 6524, 7784, 8155, 9320, 9730, 11120, 13048, 15568, 16310, 18640, 19460, 26096, 32387, 32620, 38920, 64774, 65240, 77840, 129548, 130480, 161935, 226709, 259096, 323870, 453418, 518192, 647740, 906836, 1133545, 1295480, 1813672, 2267090, 2590960, 3627344, 4534180, 9068360, 18136720]

約数ペア:

[(1, 18136720), (2, 9068360), (4, 4534180), (5, 3627344), (7, 2590960), (8, 2267090), (10, 1813672), (14, 1295480), (16, 1133545), (20, 906836), (28, 647740), (35, 518192), (40, 453418), (56, 323870), (70, 259096), (80, 226709), (112, 161935), (139, 130480), (140, 129548), (233, 77840), (278, 65240), (280, 64774), (466, 38920), (556, 32620), (560, 32387), (695, 26096), (932, 19460), (973, 18640), (1112, 16310), (1165, 15568), (1390, 13048), (1631, 11120), (1864, 9730), (1946, 9320), (2224, 8155), (2330, 7784), (2780, 6524), (3262, 5560), (3728, 4865), (3892, 4660)]