257201780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{859}}^1\times {\mathrm{1361}}^1$

素因数の和:2240

約数の個数: 48

約数和(自身を含む): 590345280

約数和(自身を除く): 333143500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 859, 1361, 1718, 2722, 3436, 4295, 5444, 6805, 8590, 9449, 13610, 14971, 17180, 18898, 27220, 29942, 37796, 47245, 59884, 74855, 94490, 149710, 188980, 299420, 1169099, 2338198, 4676396, 5845495, 11690990, 12860089, 23381980, 25720178, 51440356, 64300445, 128600890, 257201780]

約数ペア:

[(1, 257201780), (2, 128600890), (4, 64300445), (5, 51440356), (10, 25720178), (11, 23381980), (20, 12860089), (22, 11690990), (44, 5845495), (55, 4676396), (110, 2338198), (220, 1169099), (859, 299420), (1361, 188980), (1718, 149710), (2722, 94490), (3436, 74855), (4295, 59884), (5444, 47245), (6805, 37796), (8590, 29942), (9449, 27220), (13610, 18898), (14971, 17180)]