21942540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{877}}^1$

素因数の和:1031

約数の個数: 72

約数和(自身を含む): 67114320

約数和(自身を除く): 45171780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 834, 877, 1251, 1390, 1668, 1754, 2085, 2502, 2631, 2780, 3508, 4170, 4385, 5004, 5262, 6255, 7893, 8340, 8770, 10524, 12510, 13155, 15786, 17540, 25020, 26310, 31572, 39465, 52620, 78930, 121903, 157860, 243806, 365709, 487612, 609515, 731418, 1097127, 1219030, 1462836, 1828545, 2194254, 2438060, 3657090, 4388508, 5485635, 7314180, 10971270, 21942540]

約数ペア:

[(1, 21942540), (2, 10971270), (3, 7314180), (4, 5485635), (5, 4388508), (6, 3657090), (9, 2438060), (10, 2194254), (12, 1828545), (15, 1462836), (18, 1219030), (20, 1097127), (30, 731418), (36, 609515), (45, 487612), (60, 365709), (90, 243806), (139, 157860), (180, 121903), (278, 78930), (417, 52620), (556, 39465), (695, 31572), (834, 26310), (877, 25020), (1251, 17540), (1390, 15786), (1668, 13155), (1754, 12510), (2085, 10524), (2502, 8770), (2631, 8340), (2780, 7893), (3508, 6255), (4170, 5262), (4385, 5004)]