642694

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1301}}^1$

素因数の和:1335

約数の個数: 16

約数和(自身を含む): 1093680

約数和(自身を除く): 450986

約数列:

[1, 2, 13, 19, 26, 38, 247, 494, 1301, 2602, 16913, 24719, 33826, 49438, 321347, 642694]

約数ペア:

[(1, 642694), (2, 321347), (13, 49438), (19, 33826), (26, 24719), (38, 16913), (247, 2602), (494, 1301)]