21809070

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3413}}^1$

素因数の和:3497

約数の個数: 48

約数和(自身を含む): 57519072

約数和(自身を除く): 35710002

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 71, 90, 142, 213, 355, 426, 639, 710, 1065, 1278, 2130, 3195, 3413, 6390, 6826, 10239, 17065, 20478, 30717, 34130, 51195, 61434, 102390, 153585, 242323, 307170, 484646, 726969, 1211615, 1453938, 2180907, 2423230, 3634845, 4361814, 7269690, 10904535, 21809070]

約数ペア:

[(1, 21809070), (2, 10904535), (3, 7269690), (5, 4361814), (6, 3634845), (9, 2423230), (10, 2180907), (15, 1453938), (18, 1211615), (30, 726969), (45, 484646), (71, 307170), (90, 242323), (142, 153585), (213, 102390), (355, 61434), (426, 51195), (639, 34130), (710, 30717), (1065, 20478), (1278, 17065), (2130, 10239), (3195, 6826), (3413, 6390)]