21001518520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27633577}}^1$

素因数の和:27633607

約数の個数: 32

約数和(自身を含む): 49740440400

約数和(自身を除く): 28738921880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27633577, 55267154, 110534308, 138167885, 221068616, 276335770, 525037963, 552671540, 1050075926, 1105343080, 2100151852, 2625189815, 4200303704, 5250379630, 10500759260, 21001518520]

約数ペア:

[(1, 21001518520), (2, 10500759260), (4, 5250379630), (5, 4200303704), (8, 2625189815), (10, 2100151852), (19, 1105343080), (20, 1050075926), (38, 552671540), (40, 525037963), (76, 276335770), (95, 221068616), (152, 138167885), (190, 110534308), (380, 55267154), (760, 27633577)]