128880981

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{571}}^1\times {\mathrm{809}}^1$

素因数の和:1417

約数の個数: 24

約数和(自身を含む): 192741120

約数和(自身を除く): 63860139

約数列:

[1, 3, 9, 31, 93, 279, 571, 809, 1713, 2427, 5139, 7281, 17701, 25079, 53103, 75237, 159309, 225711, 461939, 1385817, 4157451, 14320109, 42960327, 128880981]

約数ペア:

[(1, 128880981), (3, 42960327), (9, 14320109), (31, 4157451), (93, 1385817), (279, 461939), (571, 225711), (809, 159309), (1713, 75237), (2427, 53103), (5139, 25079), (7281, 17701)]