21286960

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^2\times {\mathrm{503}}^1$

素因数の和:562

約数の個数: 60

約数和(自身を含む): 51840432

約数和(自身を除く): 30553472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 503, 529, 920, 1006, 1058, 1840, 2012, 2116, 2515, 2645, 4024, 4232, 5030, 5290, 8048, 8464, 10060, 10580, 11569, 20120, 21160, 23138, 40240, 42320, 46276, 57845, 92552, 115690, 185104, 231380, 266087, 462760, 532174, 925520, 1064348, 1330435, 2128696, 2660870, 4257392, 5321740, 10643480, 21286960]

約数ペア:

[(1, 21286960), (2, 10643480), (4, 5321740), (5, 4257392), (8, 2660870), (10, 2128696), (16, 1330435), (20, 1064348), (23, 925520), (40, 532174), (46, 462760), (80, 266087), (92, 231380), (115, 185104), (184, 115690), (230, 92552), (368, 57845), (460, 46276), (503, 42320), (529, 40240), (920, 23138), (1006, 21160), (1058, 20120), (1840, 11569), (2012, 10580), (2116, 10060), (2515, 8464), (2645, 8048), (4024, 5290), (4232, 5030)]