9791980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{947}}^1$

素因数の和:1014

約数の個数: 48

約数和(自身を含む): 22934016

約数和(自身を除く): 13142036

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 188, 220, 235, 470, 517, 940, 947, 1034, 1894, 2068, 2585, 3788, 4735, 5170, 9470, 10340, 10417, 18940, 20834, 41668, 44509, 52085, 89018, 104170, 178036, 208340, 222545, 445090, 489599, 890180, 979198, 1958396, 2447995, 4895990, 9791980]

約数ペア:

[(1, 9791980), (2, 4895990), (4, 2447995), (5, 1958396), (10, 979198), (11, 890180), (20, 489599), (22, 445090), (44, 222545), (47, 208340), (55, 178036), (94, 104170), (110, 89018), (188, 52085), (220, 44509), (235, 41668), (470, 20834), (517, 18940), (940, 10417), (947, 10340), (1034, 9470), (1894, 5170), (2068, 4735), (2585, 3788)]