2778860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{863}}^1$

素因数の和:902

約数の個数: 48

約数和(自身を含む): 6967296

約数和(自身を除く): 4188436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 863, 1610, 1726, 3220, 3452, 4315, 6041, 8630, 12082, 17260, 19849, 24164, 30205, 39698, 60410, 79396, 99245, 120820, 138943, 198490, 277886, 396980, 555772, 694715, 1389430, 2778860]

約数ペア:

[(1, 2778860), (2, 1389430), (4, 694715), (5, 555772), (7, 396980), (10, 277886), (14, 198490), (20, 138943), (23, 120820), (28, 99245), (35, 79396), (46, 60410), (70, 39698), (92, 30205), (115, 24164), (140, 19849), (161, 17260), (230, 12082), (322, 8630), (460, 6041), (644, 4315), (805, 3452), (863, 3220), (1610, 1726)]