427988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:223

約数の個数: 24

約数和(自身を含む): 834624

約数和(自身を除く): 406636

約数列:

[1, 2, 4, 11, 22, 44, 71, 137, 142, 274, 284, 548, 781, 1507, 1562, 3014, 3124, 6028, 9727, 19454, 38908, 106997, 213994, 427988]

約数ペア:

[(1, 427988), (2, 213994), (4, 106997), (11, 38908), (22, 19454), (44, 9727), (71, 6028), (137, 3124), (142, 3014), (274, 1562), (284, 1507), (548, 781)]