81899440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{146249}}^1$

素因数の和:146269

約数の個数: 40

約数和(自身を含む): 217620000

約数和(自身を除く): 135720560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 146249, 292498, 584996, 731245, 1023743, 1169992, 1462490, 2047486, 2339984, 2924980, 4094972, 5118715, 5849960, 8189944, 10237430, 11699920, 16379888, 20474860, 40949720, 81899440]

約数ペア:

[(1, 81899440), (2, 40949720), (4, 20474860), (5, 16379888), (7, 11699920), (8, 10237430), (10, 8189944), (14, 5849960), (16, 5118715), (20, 4094972), (28, 2924980), (35, 2339984), (40, 2047486), (56, 1462490), (70, 1169992), (80, 1023743), (112, 731245), (140, 584996), (280, 292498), (560, 146249)]