1998695560

素因数分解:

$2^3\times 5^1\times {\mathrm{2503}}^1\times {\mathrm{19963}}^1$

素因数の和:22477

約数の個数: 32

約数和(自身を含む): 4499087040

約数和(自身を除く): 2500391480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2503, 5006, 10012, 12515, 19963, 20024, 25030, 39926, 50060, 79852, 99815, 100120, 159704, 199630, 399260, 798520, 49967389, 99934778, 199869556, 249836945, 399739112, 499673890, 999347780, 1998695560]

約数ペア:

[(1, 1998695560), (2, 999347780), (4, 499673890), (5, 399739112), (8, 249836945), (10, 199869556), (20, 99934778), (40, 49967389), (2503, 798520), (5006, 399260), (10012, 199630), (12515, 159704), (19963, 100120), (20024, 99815), (25030, 79852), (39926, 50060)]