20198991718

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{653}}^1\times {\mathrm{6011}}^1$

素因数の和:6780

約数の個数: 32

約数和(自身を含む): 31706422272

約数和(自身を除く): 11507430554

約数列:

[1, 2, 31, 62, 83, 166, 653, 1306, 2573, 5146, 6011, 12022, 20243, 40486, 54199, 108398, 186341, 372682, 498913, 997826, 1680169, 3360338, 3925183, 7850366, 15466303, 30932606, 121680673, 243361346, 325790189, 651580378, 10099495859, 20198991718]

約数ペア:

[(1, 20198991718), (2, 10099495859), (31, 651580378), (62, 325790189), (83, 243361346), (166, 121680673), (653, 30932606), (1306, 15466303), (2573, 7850366), (5146, 3925183), (6011, 3360338), (12022, 1680169), (20243, 997826), (40486, 498913), (54199, 372682), (108398, 186341)]