989403460

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{696763}}^1$

素因数の和:696843

約数の個数: 24

約数和(自身を含む): 2107014336

約数和(自身を除く): 1117610876

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 696763, 1393526, 2787052, 3483815, 6967630, 13935260, 49470173, 98940346, 197880692, 247350865, 494701730, 989403460]

約数ペア:

[(1, 989403460), (2, 494701730), (4, 247350865), (5, 197880692), (10, 98940346), (20, 49470173), (71, 13935260), (142, 6967630), (284, 3483815), (355, 2787052), (710, 1393526), (1420, 696763)]