251128985

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1\times {\mathrm{317}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 329702400

約数和(自身を除く): 78573415

約数列:

[1, 5, 19, 31, 95, 155, 269, 317, 589, 1345, 1585, 2945, 5111, 6023, 8339, 9827, 25555, 30115, 41695, 49135, 85273, 158441, 186713, 426365, 792205, 933565, 1620187, 2643463, 8100935, 13217315, 50225797, 251128985]

約数ペア:

[(1, 251128985), (5, 50225797), (19, 13217315), (31, 8100935), (95, 2643463), (155, 1620187), (269, 933565), (317, 792205), (589, 426365), (1345, 186713), (1585, 158441), (2945, 85273), (5111, 49135), (6023, 41695), (8339, 30115), (9827, 25555)]