20493990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{163}}^1$

素因数の和:314

約数の個数: 96

約数和(自身を含む): 58945536

約数和(自身を除く): 38451546

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 127, 163, 165, 198, 254, 326, 330, 381, 489, 495, 635, 762, 815, 978, 990, 1143, 1270, 1397, 1467, 1630, 1793, 1905, 2286, 2445, 2794, 2934, 3586, 3810, 4191, 4890, 5379, 5715, 6985, 7335, 8382, 8965, 10758, 11430, 12573, 13970, 14670, 16137, 17930, 20701, 20955, 25146, 26895, 32274, 41402, 41910, 53790, 62103, 62865, 80685, 103505, 124206, 125730, 161370, 186309, 207010, 227711, 310515, 372618, 455422, 621030, 683133, 931545, 1138555, 1366266, 1863090, 2049399, 2277110, 3415665, 4098798, 6831330, 10246995, 20493990]

約数ペア:

[(1, 20493990), (2, 10246995), (3, 6831330), (5, 4098798), (6, 3415665), (9, 2277110), (10, 2049399), (11, 1863090), (15, 1366266), (18, 1138555), (22, 931545), (30, 683133), (33, 621030), (45, 455422), (55, 372618), (66, 310515), (90, 227711), (99, 207010), (110, 186309), (127, 161370), (163, 125730), (165, 124206), (198, 103505), (254, 80685), (326, 62865), (330, 62103), (381, 53790), (489, 41910), (495, 41402), (635, 32274), (762, 26895), (815, 25146), (978, 20955), (990, 20701), (1143, 17930), (1270, 16137), (1397, 14670), (1467, 13970), (1630, 12573), (1793, 11430), (1905, 10758), (2286, 8965), (2445, 8382), (2794, 7335), (2934, 6985), (3586, 5715), (3810, 5379), (4191, 4890)]