21864320

素因数分解:

$2^7\times 5^1\times {\mathrm{127}}^1\times {\mathrm{269}}^1$

素因数の和:415

約数の個数: 64

約数和(自身を含む): 52876800

約数和(自身を除く): 31012480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 269, 320, 508, 538, 635, 640, 1016, 1076, 1270, 1345, 2032, 2152, 2540, 2690, 4064, 4304, 5080, 5380, 8128, 8608, 10160, 10760, 16256, 17216, 20320, 21520, 34163, 34432, 40640, 43040, 68326, 81280, 86080, 136652, 170815, 172160, 273304, 341630, 546608, 683260, 1093216, 1366520, 2186432, 2733040, 4372864, 5466080, 10932160, 21864320]

約数ペア:

[(1, 21864320), (2, 10932160), (4, 5466080), (5, 4372864), (8, 2733040), (10, 2186432), (16, 1366520), (20, 1093216), (32, 683260), (40, 546608), (64, 341630), (80, 273304), (127, 172160), (128, 170815), (160, 136652), (254, 86080), (269, 81280), (320, 68326), (508, 43040), (538, 40640), (635, 34432), (640, 34163), (1016, 21520), (1076, 20320), (1270, 17216), (1345, 16256), (2032, 10760), (2152, 10160), (2540, 8608), (2690, 8128), (4064, 5380), (4304, 5080)]