20298960

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{233}}^1$

素因数の和:274

約数の個数: 180

約数和(自身を含む): 75252996

約数和(自身を除く): 54954036

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 121, 132, 144, 165, 176, 180, 198, 220, 233, 240, 242, 264, 330, 360, 363, 396, 440, 466, 484, 495, 528, 605, 660, 699, 720, 726, 792, 880, 932, 968, 990, 1089, 1165, 1210, 1320, 1398, 1452, 1584, 1815, 1864, 1936, 1980, 2097, 2178, 2330, 2420, 2563, 2640, 2796, 2904, 3495, 3630, 3728, 3960, 4194, 4356, 4660, 4840, 5126, 5445, 5592, 5808, 6990, 7260, 7689, 7920, 8388, 8712, 9320, 9680, 10252, 10485, 10890, 11184, 12815, 13980, 14520, 15378, 16776, 17424, 18640, 20504, 20970, 21780, 23067, 25630, 27960, 28193, 29040, 30756, 33552, 38445, 41008, 41940, 43560, 46134, 51260, 55920, 56386, 61512, 76890, 83880, 84579, 87120, 92268, 102520, 112772, 115335, 123024, 140965, 153780, 167760, 169158, 184536, 205040, 225544, 230670, 253737, 281930, 307560, 338316, 369072, 422895, 451088, 461340, 507474, 563860, 615120, 676632, 845790, 922680, 1014948, 1127720, 1268685, 1353264, 1691580, 1845360, 2029896, 2255440, 2537370, 3383160, 4059792, 5074740, 6766320, 10149480, 20298960]

約数ペア:

[(1, 20298960), (2, 10149480), (3, 6766320), (4, 5074740), (5, 4059792), (6, 3383160), (8, 2537370), (9, 2255440), (10, 2029896), (11, 1845360), (12, 1691580), (15, 1353264), (16, 1268685), (18, 1127720), (20, 1014948), (22, 922680), (24, 845790), (30, 676632), (33, 615120), (36, 563860), (40, 507474), (44, 461340), (45, 451088), (48, 422895), (55, 369072), (60, 338316), (66, 307560), (72, 281930), (80, 253737), (88, 230670), (90, 225544), (99, 205040), (110, 184536), (120, 169158), (121, 167760), (132, 153780), (144, 140965), (165, 123024), (176, 115335), (180, 112772), (198, 102520), (220, 92268), (233, 87120), (240, 84579), (242, 83880), (264, 76890), (330, 61512), (360, 56386), (363, 55920), (396, 51260), (440, 46134), (466, 43560), (484, 41940), (495, 41008), (528, 38445), (605, 33552), (660, 30756), (699, 29040), (720, 28193), (726, 27960), (792, 25630), (880, 23067), (932, 21780), (968, 20970), (990, 20504), (1089, 18640), (1165, 17424), (1210, 16776), (1320, 15378), (1398, 14520), (1452, 13980), (1584, 12815), (1815, 11184), (1864, 10890), (1936, 10485), (1980, 10252), (2097, 9680), (2178, 9320), (2330, 8712), (2420, 8388), (2563, 7920), (2640, 7689), (2796, 7260), (2904, 6990), (3495, 5808), (3630, 5592), (3728, 5445), (3960, 5126), (4194, 4840), (4356, 4660)]