21780470908

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{467}}^1\times {\mathrm{72421}}^1$

素因数の和:72922

約数の個数: 48

約数和(自身を含む): 45552858624

約数和(自身を除く): 23772387716

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 467, 644, 934, 1868, 3269, 6538, 10741, 13076, 21482, 42964, 72421, 75187, 144842, 150374, 289684, 300748, 506947, 1013894, 1665683, 2027788, 3331366, 6662732, 11659781, 23319562, 33820607, 46639124, 67641214, 135282428, 236744249, 473488498, 777873961, 946976996, 1555747922, 3111495844, 5445117727, 10890235454, 21780470908]

約数ペア:

[(1, 21780470908), (2, 10890235454), (4, 5445117727), (7, 3111495844), (14, 1555747922), (23, 946976996), (28, 777873961), (46, 473488498), (92, 236744249), (161, 135282428), (322, 67641214), (467, 46639124), (644, 33820607), (934, 23319562), (1868, 11659781), (3269, 6662732), (6538, 3331366), (10741, 2027788), (13076, 1665683), (21482, 1013894), (42964, 506947), (72421, 300748), (75187, 289684), (144842, 150374)]