28521520

素因数分解:

$2^4\times 5^1\times {\mathrm{541}}^1\times {\mathrm{659}}^1$

素因数の和:1213

約数の個数: 40

約数和(自身を含む): 66535920

約数和(自身を除く): 38014400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 541, 659, 1082, 1318, 2164, 2636, 2705, 3295, 4328, 5272, 5410, 6590, 8656, 10544, 10820, 13180, 21640, 26360, 43280, 52720, 356519, 713038, 1426076, 1782595, 2852152, 3565190, 5704304, 7130380, 14260760, 28521520]

約数ペア:

[(1, 28521520), (2, 14260760), (4, 7130380), (5, 5704304), (8, 3565190), (10, 2852152), (16, 1782595), (20, 1426076), (40, 713038), (80, 356519), (541, 52720), (659, 43280), (1082, 26360), (1318, 21640), (2164, 13180), (2636, 10820), (2705, 10544), (3295, 8656), (4328, 6590), (5272, 5410)]