81119480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{607}}^1$

素因数の和:888

約数の個数: 64

約数和(自身を含む): 197648640

約数和(自身を除く): 116529160

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 257, 260, 514, 520, 607, 1028, 1214, 1285, 2056, 2428, 2570, 3035, 3341, 4856, 5140, 6070, 6682, 7891, 10280, 12140, 13364, 15782, 16705, 24280, 26728, 31564, 33410, 39455, 63128, 66820, 78910, 133640, 155999, 157820, 311998, 315640, 623996, 779995, 1247992, 1559990, 2027987, 3119980, 4055974, 6239960, 8111948, 10139935, 16223896, 20279870, 40559740, 81119480]

約数ペア:

[(1, 81119480), (2, 40559740), (4, 20279870), (5, 16223896), (8, 10139935), (10, 8111948), (13, 6239960), (20, 4055974), (26, 3119980), (40, 2027987), (52, 1559990), (65, 1247992), (104, 779995), (130, 623996), (257, 315640), (260, 311998), (514, 157820), (520, 155999), (607, 133640), (1028, 78910), (1214, 66820), (1285, 63128), (2056, 39455), (2428, 33410), (2570, 31564), (3035, 26728), (3341, 24280), (4856, 16705), (5140, 15782), (6070, 13364), (6682, 12140), (7891, 10280)]