51390220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1279}}^1$

素因数の和:1343

約数の個数: 72

約数和(自身を含む): 128701440

約数和(自身を除く): 77311220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 82, 98, 140, 164, 196, 205, 245, 287, 410, 490, 574, 820, 980, 1148, 1279, 1435, 2009, 2558, 2870, 4018, 5116, 5740, 6395, 8036, 8953, 10045, 12790, 17906, 20090, 25580, 35812, 40180, 44765, 52439, 62671, 89530, 104878, 125342, 179060, 209756, 250684, 262195, 313355, 367073, 524390, 626710, 734146, 1048780, 1253420, 1468292, 1835365, 2569511, 3670730, 5139022, 7341460, 10278044, 12847555, 25695110, 51390220]

約数ペア:

[(1, 51390220), (2, 25695110), (4, 12847555), (5, 10278044), (7, 7341460), (10, 5139022), (14, 3670730), (20, 2569511), (28, 1835365), (35, 1468292), (41, 1253420), (49, 1048780), (70, 734146), (82, 626710), (98, 524390), (140, 367073), (164, 313355), (196, 262195), (205, 250684), (245, 209756), (287, 179060), (410, 125342), (490, 104878), (574, 89530), (820, 62671), (980, 52439), (1148, 44765), (1279, 40180), (1435, 35812), (2009, 25580), (2558, 20090), (2870, 17906), (4018, 12790), (5116, 10045), (5740, 8953), (6395, 8036)]