81442760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1607}}^1$

素因数の和:1806

約数の個数: 64

約数和(自身を含む): 210712320

約数和(自身を除く): 129269560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 181, 280, 362, 724, 905, 1267, 1448, 1607, 1810, 2534, 3214, 3620, 5068, 6335, 6428, 7240, 8035, 10136, 11249, 12670, 12856, 16070, 22498, 25340, 32140, 44996, 50680, 56245, 64280, 89992, 112490, 224980, 290867, 449960, 581734, 1163468, 1454335, 2036069, 2326936, 2908670, 4072138, 5817340, 8144276, 10180345, 11634680, 16288552, 20360690, 40721380, 81442760]

約数ペア:

[(1, 81442760), (2, 40721380), (4, 20360690), (5, 16288552), (7, 11634680), (8, 10180345), (10, 8144276), (14, 5817340), (20, 4072138), (28, 2908670), (35, 2326936), (40, 2036069), (56, 1454335), (70, 1163468), (140, 581734), (181, 449960), (280, 290867), (362, 224980), (724, 112490), (905, 89992), (1267, 64280), (1448, 56245), (1607, 50680), (1810, 44996), (2534, 32140), (3214, 25340), (3620, 22498), (5068, 16070), (6335, 12856), (6428, 12670), (7240, 11249), (8035, 10136)]