20797725

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{257}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 37622592

約数和(自身を除く): 16824867

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 83, 195, 249, 257, 325, 415, 771, 975, 1079, 1245, 1285, 2075, 3237, 3341, 3855, 5395, 6225, 6425, 10023, 16185, 16705, 19275, 21331, 26975, 50115, 63993, 80925, 83525, 106655, 250575, 277303, 319965, 533275, 831909, 1386515, 1599825, 4159545, 6932575, 20797725]

約数ペア:

[(1, 20797725), (3, 6932575), (5, 4159545), (13, 1599825), (15, 1386515), (25, 831909), (39, 533275), (65, 319965), (75, 277303), (83, 250575), (195, 106655), (249, 83525), (257, 80925), (325, 63993), (415, 50115), (771, 26975), (975, 21331), (1079, 19275), (1245, 16705), (1285, 16185), (2075, 10023), (3237, 6425), (3341, 6225), (3855, 5395)]