28388080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{311}}^1$

素因数の和:494

約数の個数: 80

約数和(自身を含む): 76137984

約数和(自身を除く): 47749904

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 163, 280, 311, 326, 560, 622, 652, 815, 1141, 1244, 1304, 1555, 1630, 2177, 2282, 2488, 2608, 3110, 3260, 4354, 4564, 4976, 5705, 6220, 6520, 8708, 9128, 10885, 11410, 12440, 13040, 17416, 18256, 21770, 22820, 24880, 34832, 43540, 45640, 50693, 87080, 91280, 101386, 174160, 202772, 253465, 354851, 405544, 506930, 709702, 811088, 1013860, 1419404, 1774255, 2027720, 2838808, 3548510, 4055440, 5677616, 7097020, 14194040, 28388080]

約数ペア:

[(1, 28388080), (2, 14194040), (4, 7097020), (5, 5677616), (7, 4055440), (8, 3548510), (10, 2838808), (14, 2027720), (16, 1774255), (20, 1419404), (28, 1013860), (35, 811088), (40, 709702), (56, 506930), (70, 405544), (80, 354851), (112, 253465), (140, 202772), (163, 174160), (280, 101386), (311, 91280), (326, 87080), (560, 50693), (622, 45640), (652, 43540), (815, 34832), (1141, 24880), (1244, 22820), (1304, 21770), (1555, 18256), (1630, 17416), (2177, 13040), (2282, 12440), (2488, 11410), (2608, 10885), (3110, 9128), (3260, 8708), (4354, 6520), (4564, 6220), (4976, 5705)]