20040820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2293}}^1$

素因数の和:2344

約数の個数: 48

約数和(自身を含む): 46247040

約数和(自身を除く): 26206220

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 380, 437, 460, 874, 1748, 2185, 2293, 4370, 4586, 8740, 9172, 11465, 22930, 43567, 45860, 52739, 87134, 105478, 174268, 210956, 217835, 263695, 435670, 527390, 871340, 1002041, 1054780, 2004082, 4008164, 5010205, 10020410, 20040820]

約数ペア:

[(1, 20040820), (2, 10020410), (4, 5010205), (5, 4008164), (10, 2004082), (19, 1054780), (20, 1002041), (23, 871340), (38, 527390), (46, 435670), (76, 263695), (92, 217835), (95, 210956), (115, 174268), (190, 105478), (230, 87134), (380, 52739), (437, 45860), (460, 43567), (874, 22930), (1748, 11465), (2185, 9172), (2293, 8740), (4370, 4586)]