20121320

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{21871}}^1$

素因数の和:21905

約数の個数: 32

約数和(自身を含む): 47243520

約数和(自身を除く): 27122200

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 21871, 43742, 87484, 109355, 174968, 218710, 437420, 503033, 874840, 1006066, 2012132, 2515165, 4024264, 5030330, 10060660, 20121320]

約数ペア:

[(1, 20121320), (2, 10060660), (4, 5030330), (5, 4024264), (8, 2515165), (10, 2012132), (20, 1006066), (23, 874840), (40, 503033), (46, 437420), (92, 218710), (115, 174968), (184, 109355), (230, 87484), (460, 43742), (920, 21871)]