31891210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{245317}}^1$

素因数の和:245337

約数の個数: 16

約数和(自身を含む): 61820136

約数和(自身を除く): 29928926

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 245317, 490634, 1226585, 2453170, 3189121, 6378242, 15945605, 31891210]

約数ペア:

[(1, 31891210), (2, 15945605), (5, 6378242), (10, 3189121), (13, 2453170), (26, 1226585), (65, 490634), (130, 245317)]