21078645

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{367}}^1\times {\mathrm{547}}^1$

素因数の和:929

約数の個数: 32

約数和(自身を含む): 38719488

約数和(自身を除く): 17640843

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 367, 547, 1101, 1641, 1835, 2569, 2735, 3829, 5505, 7707, 8205, 11487, 12845, 19145, 38535, 57435, 200749, 602247, 1003745, 1405243, 3011235, 4215729, 7026215, 21078645]

約数ペア:

[(1, 21078645), (3, 7026215), (5, 4215729), (7, 3011235), (15, 1405243), (21, 1003745), (35, 602247), (105, 200749), (367, 57435), (547, 38535), (1101, 19145), (1641, 12845), (1835, 11487), (2569, 8205), (2735, 7707), (3829, 5505)]