21913160

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2083}}^1$

素因数の和:2357

約数の個数: 32

約数和(自身を含む): 49515840

約数和(自身を除く): 27602680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2083, 2104, 2630, 4166, 5260, 8332, 10415, 10520, 16664, 20830, 41660, 83320, 547829, 1095658, 2191316, 2739145, 4382632, 5478290, 10956580, 21913160]

約数ペア:

[(1, 21913160), (2, 10956580), (4, 5478290), (5, 4382632), (8, 2739145), (10, 2191316), (20, 1095658), (40, 547829), (263, 83320), (526, 41660), (1052, 20830), (1315, 16664), (2083, 10520), (2104, 10415), (2630, 8332), (4166, 5260)]