87990520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{115777}}^1$

素因数の和:115807

約数の個数: 32

約数和(自身を含む): 208400400

約数和(自身を除く): 120409880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 115777, 231554, 463108, 578885, 926216, 1157770, 2199763, 2315540, 4399526, 4631080, 8799052, 10998815, 17598104, 21997630, 43995260, 87990520]

約数ペア:

[(1, 87990520), (2, 43995260), (4, 21997630), (5, 17598104), (8, 10998815), (10, 8799052), (19, 4631080), (20, 4399526), (38, 2315540), (40, 2199763), (76, 1157770), (95, 926216), (152, 578885), (190, 463108), (380, 231554), (760, 115777)]