27721960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{547}}^1$

素因数の和:746

約数の個数: 64

約数和(自身を含む): 71809920

約数和(自身を除く): 44087960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 181, 280, 362, 547, 724, 905, 1094, 1267, 1448, 1810, 2188, 2534, 2735, 3620, 3829, 4376, 5068, 5470, 6335, 7240, 7658, 10136, 10940, 12670, 15316, 19145, 21880, 25340, 30632, 38290, 50680, 76580, 99007, 153160, 198014, 396028, 495035, 693049, 792056, 990070, 1386098, 1980140, 2772196, 3465245, 3960280, 5544392, 6930490, 13860980, 27721960]

約数ペア:

[(1, 27721960), (2, 13860980), (4, 6930490), (5, 5544392), (7, 3960280), (8, 3465245), (10, 2772196), (14, 1980140), (20, 1386098), (28, 990070), (35, 792056), (40, 693049), (56, 495035), (70, 396028), (140, 198014), (181, 153160), (280, 99007), (362, 76580), (547, 50680), (724, 38290), (905, 30632), (1094, 25340), (1267, 21880), (1448, 19145), (1810, 15316), (2188, 12670), (2534, 10940), (2735, 10136), (3620, 7658), (3829, 7240), (4376, 6335), (5068, 5470)]