78841990

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{254329}}^1$

素因数の和:254367

約数の個数: 16

約数和(自身を含む): 146494080

約数和(自身を除く): 67652090

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 254329, 508658, 1271645, 2543290, 7884199, 15768398, 39420995, 78841990]

約数ペア:

[(1, 78841990), (2, 39420995), (5, 15768398), (10, 7884199), (31, 2543290), (62, 1271645), (155, 508658), (310, 254329)]