21047175

素因数分解:

$3^3\times 5^2\times {\mathrm{31181}}^1$

素因数の和:31200

約数の個数: 24

約数和(自身を含む): 38665680

約数和(自身を除く): 17618505

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 31181, 93543, 155905, 280629, 467715, 779525, 841887, 1403145, 2338575, 4209435, 7015725, 21047175]

約数ペア:

[(1, 21047175), (3, 7015725), (5, 4209435), (9, 2338575), (15, 1403145), (25, 841887), (27, 779525), (45, 467715), (75, 280629), (135, 155905), (225, 93543), (675, 31181)]