28077520

素因数分解:

$2^4\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1249}}^1$

素因数の和:1543

約数の個数: 40

約数和(自身を含む): 65565000

約数和(自身を除く): 37487480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 281, 562, 1124, 1249, 1405, 2248, 2498, 2810, 4496, 4996, 5620, 6245, 9992, 11240, 12490, 19984, 22480, 24980, 49960, 99920, 350969, 701938, 1403876, 1754845, 2807752, 3509690, 5615504, 7019380, 14038760, 28077520]

約数ペア:

[(1, 28077520), (2, 14038760), (4, 7019380), (5, 5615504), (8, 3509690), (10, 2807752), (16, 1754845), (20, 1403876), (40, 701938), (80, 350969), (281, 99920), (562, 49960), (1124, 24980), (1249, 22480), (1405, 19984), (2248, 12490), (2498, 11240), (2810, 9992), (4496, 6245), (4996, 5620)]