21140550

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:558

約数の個数: 72

約数和(自身を含む): 57451680

約数和(自身を除く): 36311130

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 109, 150, 218, 225, 327, 431, 450, 545, 654, 862, 981, 1090, 1293, 1635, 1962, 2155, 2586, 2725, 3270, 3879, 4310, 4905, 5450, 6465, 7758, 8175, 9810, 10775, 12930, 16350, 19395, 21550, 24525, 32325, 38790, 46979, 49050, 64650, 93958, 96975, 140937, 193950, 234895, 281874, 422811, 469790, 704685, 845622, 1174475, 1409370, 2114055, 2348950, 3523425, 4228110, 7046850, 10570275, 21140550]

約数ペア:

[(1, 21140550), (2, 10570275), (3, 7046850), (5, 4228110), (6, 3523425), (9, 2348950), (10, 2114055), (15, 1409370), (18, 1174475), (25, 845622), (30, 704685), (45, 469790), (50, 422811), (75, 281874), (90, 234895), (109, 193950), (150, 140937), (218, 96975), (225, 93958), (327, 64650), (431, 49050), (450, 46979), (545, 38790), (654, 32325), (862, 24525), (981, 21550), (1090, 19395), (1293, 16350), (1635, 12930), (1962, 10775), (2155, 9810), (2586, 8175), (2725, 7758), (3270, 6465), (3879, 5450), (4310, 4905)]