18705520

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3203}}^1$

素因数の和:3289

約数の個数: 40

約数和(自身を含む): 44099856

約数和(自身を除く): 25394336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 3203, 5840, 6406, 12812, 16015, 25624, 32030, 51248, 64060, 128120, 233819, 256240, 467638, 935276, 1169095, 1870552, 2338190, 3741104, 4676380, 9352760, 18705520]

約数ペア:

[(1, 18705520), (2, 9352760), (4, 4676380), (5, 3741104), (8, 2338190), (10, 1870552), (16, 1169095), (20, 935276), (40, 467638), (73, 256240), (80, 233819), (146, 128120), (292, 64060), (365, 51248), (584, 32030), (730, 25624), (1168, 16015), (1460, 12812), (2920, 6406), (3203, 5840)]