21019178

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1\times {\mathrm{977}}^1$

素因数の和:1357

約数の個数: 16

約数和(自身を含む): 32673024

約数和(自身を除く): 11653846

約数列:

[1, 2, 31, 62, 347, 694, 977, 1954, 10757, 21514, 30287, 60574, 339019, 678038, 10509589, 21019178]

約数ペア:

[(1, 21019178), (2, 10509589), (31, 678038), (62, 339019), (347, 60574), (694, 30287), (977, 21514), (1954, 10757)]