1289703664

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{2600209}}^1$

素因数の和:2600248

約数の個数: 20

約数和(自身を含む): 2579408320

約数和(自身を除く): 1289704656

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 2600209, 5200418, 10400836, 20801672, 41603344, 80606479, 161212958, 322425916, 644851832, 1289703664]

約数ペア:

[(1, 1289703664), (2, 644851832), (4, 322425916), (8, 161212958), (16, 80606479), (31, 41603344), (62, 20801672), (124, 10400836), (248, 5200418), (496, 2600209)]