1328912680

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{467927}}^1$

素因数の和:468009

約数の個数: 32

約数和(自身を含む): 3032173440

約数和(自身を除く): 1703260760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 467927, 935854, 1871708, 2339635, 3743416, 4679270, 9358540, 18717080, 33222817, 66445634, 132891268, 166114085, 265782536, 332228170, 664456340, 1328912680]

約数ペア:

[(1, 1328912680), (2, 664456340), (4, 332228170), (5, 265782536), (8, 166114085), (10, 132891268), (20, 66445634), (40, 33222817), (71, 18717080), (142, 9358540), (284, 4679270), (355, 3743416), (568, 2339635), (710, 1871708), (1420, 935854), (2840, 467927)]