21283275

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 38497536

約数和(自身を除く): 17214261

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 83, 195, 249, 263, 325, 415, 789, 975, 1079, 1245, 1315, 2075, 3237, 3419, 3945, 5395, 6225, 6575, 10257, 16185, 17095, 19725, 21829, 26975, 51285, 65487, 80925, 85475, 109145, 256425, 283777, 327435, 545725, 851331, 1418885, 1637175, 4256655, 7094425, 21283275]

約数ペア:

[(1, 21283275), (3, 7094425), (5, 4256655), (13, 1637175), (15, 1418885), (25, 851331), (39, 545725), (65, 327435), (75, 283777), (83, 256425), (195, 109145), (249, 85475), (263, 80925), (325, 65487), (415, 51285), (789, 26975), (975, 21829), (1079, 19725), (1245, 17095), (1315, 16185), (2075, 10257), (3237, 6575), (3419, 6225), (3945, 5395)]