21074220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 69346368

約数和(自身を除く): 48272148

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 71, 85, 90, 97, 102, 142, 153, 170, 180, 194, 204, 213, 255, 284, 291, 306, 340, 355, 388, 426, 485, 510, 582, 612, 639, 710, 765, 852, 873, 970, 1020, 1065, 1164, 1207, 1278, 1420, 1455, 1530, 1649, 1746, 1940, 2130, 2414, 2556, 2910, 3060, 3195, 3298, 3492, 3621, 4260, 4365, 4828, 4947, 5820, 6035, 6390, 6596, 6887, 7242, 8245, 8730, 9894, 10863, 12070, 12780, 13774, 14484, 14841, 16490, 17460, 18105, 19788, 20661, 21726, 24140, 24735, 27548, 29682, 32980, 34435, 36210, 41322, 43452, 49470, 54315, 59364, 61983, 68870, 72420, 74205, 82644, 98940, 103305, 108630, 117079, 123966, 137740, 148410, 206610, 217260, 234158, 247932, 296820, 309915, 351237, 413220, 468316, 585395, 619830, 702474, 1053711, 1170790, 1239660, 1404948, 1756185, 2107422, 2341580, 3512370, 4214844, 5268555, 7024740, 10537110, 21074220]

約数ペア:

[(1, 21074220), (2, 10537110), (3, 7024740), (4, 5268555), (5, 4214844), (6, 3512370), (9, 2341580), (10, 2107422), (12, 1756185), (15, 1404948), (17, 1239660), (18, 1170790), (20, 1053711), (30, 702474), (34, 619830), (36, 585395), (45, 468316), (51, 413220), (60, 351237), (68, 309915), (71, 296820), (85, 247932), (90, 234158), (97, 217260), (102, 206610), (142, 148410), (153, 137740), (170, 123966), (180, 117079), (194, 108630), (204, 103305), (213, 98940), (255, 82644), (284, 74205), (291, 72420), (306, 68870), (340, 61983), (355, 59364), (388, 54315), (426, 49470), (485, 43452), (510, 41322), (582, 36210), (612, 34435), (639, 32980), (710, 29682), (765, 27548), (852, 24735), (873, 24140), (970, 21726), (1020, 20661), (1065, 19788), (1164, 18105), (1207, 17460), (1278, 16490), (1420, 14841), (1455, 14484), (1530, 13774), (1649, 12780), (1746, 12070), (1940, 10863), (2130, 9894), (2414, 8730), (2556, 8245), (2910, 7242), (3060, 6887), (3195, 6596), (3298, 6390), (3492, 6035), (3621, 5820), (4260, 4947), (4365, 4828)]