81603760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145721}}^1$

素因数の和:145741

約数の個数: 40

約数和(自身を含む): 216834336

約数和(自身を除く): 135230576

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145721, 291442, 582884, 728605, 1020047, 1165768, 1457210, 2040094, 2331536, 2914420, 4080188, 5100235, 5828840, 8160376, 10200470, 11657680, 16320752, 20400940, 40801880, 81603760]

約数ペア:

[(1, 81603760), (2, 40801880), (4, 20400940), (5, 16320752), (7, 11657680), (8, 10200470), (10, 8160376), (14, 5828840), (16, 5100235), (20, 4080188), (28, 2914420), (35, 2331536), (40, 2040094), (56, 1457210), (70, 1165768), (80, 1020047), (112, 728605), (140, 582884), (280, 291442), (560, 145721)]