28148220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{443}}^1$

素因数の和:811

約数の個数: 72

約数和(自身を含む): 85818096

約数和(自身を除く): 57669876

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 353, 443, 706, 886, 1059, 1329, 1412, 1765, 1772, 2118, 2215, 2658, 3177, 3530, 3987, 4236, 4430, 5295, 5316, 6354, 6645, 7060, 7974, 8860, 10590, 12708, 13290, 15885, 15948, 19935, 21180, 26580, 31770, 39870, 63540, 79740, 156379, 312758, 469137, 625516, 781895, 938274, 1407411, 1563790, 1876548, 2345685, 2814822, 3127580, 4691370, 5629644, 7037055, 9382740, 14074110, 28148220]

約数ペア:

[(1, 28148220), (2, 14074110), (3, 9382740), (4, 7037055), (5, 5629644), (6, 4691370), (9, 3127580), (10, 2814822), (12, 2345685), (15, 1876548), (18, 1563790), (20, 1407411), (30, 938274), (36, 781895), (45, 625516), (60, 469137), (90, 312758), (180, 156379), (353, 79740), (443, 63540), (706, 39870), (886, 31770), (1059, 26580), (1329, 21180), (1412, 19935), (1765, 15948), (1772, 15885), (2118, 13290), (2215, 12708), (2658, 10590), (3177, 8860), (3530, 7974), (3987, 7060), (4236, 6645), (4430, 6354), (5295, 5316)]