28665680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18859}}^1$

素因数の和:18891

約数の個数: 40

約数和(自身を含む): 70159200

約数和(自身を除く): 41493520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 18859, 37718, 75436, 94295, 150872, 188590, 301744, 358321, 377180, 716642, 754360, 1433284, 1508720, 1791605, 2866568, 3583210, 5733136, 7166420, 14332840, 28665680]

約数ペア:

[(1, 28665680), (2, 14332840), (4, 7166420), (5, 5733136), (8, 3583210), (10, 2866568), (16, 1791605), (19, 1508720), (20, 1433284), (38, 754360), (40, 716642), (76, 377180), (80, 358321), (95, 301744), (152, 188590), (190, 150872), (304, 94295), (380, 75436), (760, 37718), (1520, 18859)]