21378003

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{457}}^1\times {\mathrm{503}}^1$

素因数の和:994

約数の個数: 16

約数和(自身を含む): 29546496

約数和(自身を除く): 8168493

約数列:

[1, 3, 31, 93, 457, 503, 1371, 1509, 14167, 15593, 42501, 46779, 229871, 689613, 7126001, 21378003]

約数ペア:

[(1, 21378003), (3, 7126001), (31, 689613), (93, 229871), (457, 46779), (503, 42501), (1371, 15593), (1509, 14167)]