19702125

素因数分解:

$3^2\times 5^3\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:315

約数の個数: 48

約数和(自身を含む): 36114624

約数和(自身を除く): 16412499

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 83, 125, 211, 225, 249, 375, 415, 633, 747, 1055, 1125, 1245, 1899, 2075, 3165, 3735, 5275, 6225, 9495, 10375, 15825, 17513, 18675, 26375, 31125, 47475, 52539, 79125, 87565, 93375, 157617, 237375, 262695, 437825, 788085, 1313475, 2189125, 3940425, 6567375, 19702125]

約数ペア:

[(1, 19702125), (3, 6567375), (5, 3940425), (9, 2189125), (15, 1313475), (25, 788085), (45, 437825), (75, 262695), (83, 237375), (125, 157617), (211, 93375), (225, 87565), (249, 79125), (375, 52539), (415, 47475), (633, 31125), (747, 26375), (1055, 18675), (1125, 17513), (1245, 15825), (1899, 10375), (2075, 9495), (3165, 6225), (3735, 5275)]