21798788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 43352064

約数和(自身を除く): 21553276

約数列:

[1, 2, 4, 11, 22, 44, 47, 83, 94, 127, 166, 188, 254, 332, 508, 517, 913, 1034, 1397, 1826, 2068, 2794, 3652, 3901, 5588, 5969, 7802, 10541, 11938, 15604, 21082, 23876, 42164, 42911, 65659, 85822, 115951, 131318, 171644, 231902, 262636, 463804, 495427, 990854, 1981708, 5449697, 10899394, 21798788]

約数ペア:

[(1, 21798788), (2, 10899394), (4, 5449697), (11, 1981708), (22, 990854), (44, 495427), (47, 463804), (83, 262636), (94, 231902), (127, 171644), (166, 131318), (188, 115951), (254, 85822), (332, 65659), (508, 42911), (517, 42164), (913, 23876), (1034, 21082), (1397, 15604), (1826, 11938), (2068, 10541), (2794, 7802), (3652, 5969), (3901, 5588)]