18478880

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2357}}^1$

素因数の和:2386

約数の個数: 72

約数和(自身を含む): 50805468

約数和(自身を除く): 32326588

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2357, 3920, 4714, 7840, 9428, 11785, 16499, 18856, 23570, 32998, 37712, 47140, 65996, 75424, 82495, 94280, 115493, 131992, 164990, 188560, 230986, 263984, 329980, 377120, 461972, 527968, 577465, 659960, 923944, 1154930, 1319920, 1847888, 2309860, 2639840, 3695776, 4619720, 9239440, 18478880]

約数ペア:

[(1, 18478880), (2, 9239440), (4, 4619720), (5, 3695776), (7, 2639840), (8, 2309860), (10, 1847888), (14, 1319920), (16, 1154930), (20, 923944), (28, 659960), (32, 577465), (35, 527968), (40, 461972), (49, 377120), (56, 329980), (70, 263984), (80, 230986), (98, 188560), (112, 164990), (140, 131992), (160, 115493), (196, 94280), (224, 82495), (245, 75424), (280, 65996), (392, 47140), (490, 37712), (560, 32998), (784, 23570), (980, 18856), (1120, 16499), (1568, 11785), (1960, 9428), (2357, 7840), (3920, 4714)]