21108130

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{641}}^1$

素因数の和:774

約数の個数: 32

約数和(自身を含む): 39521520

約数和(自身を除く): 18413390

約数列:

[1, 2, 5, 10, 37, 74, 89, 178, 185, 370, 445, 641, 890, 1282, 3205, 3293, 6410, 6586, 16465, 23717, 32930, 47434, 57049, 114098, 118585, 237170, 285245, 570490, 2110813, 4221626, 10554065, 21108130]

約数ペア:

[(1, 21108130), (2, 10554065), (5, 4221626), (10, 2110813), (37, 570490), (74, 285245), (89, 237170), (178, 118585), (185, 114098), (370, 57049), (445, 47434), (641, 32930), (890, 23717), (1282, 16465), (3205, 6586), (3293, 6410)]