21264386

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{499}}^1$

素因数の和:674

約数の個数: 32

約数和(自身を含む): 37800000

約数和(自身を除く): 16535614

約数列:

[1, 2, 11, 13, 22, 26, 143, 149, 286, 298, 499, 998, 1639, 1937, 3278, 3874, 5489, 6487, 10978, 12974, 21307, 42614, 71357, 74351, 142714, 148702, 817861, 966563, 1635722, 1933126, 10632193, 21264386]

約数ペア:

[(1, 21264386), (2, 10632193), (11, 1933126), (13, 1635722), (22, 966563), (26, 817861), (143, 148702), (149, 142714), (286, 74351), (298, 71357), (499, 42614), (998, 21307), (1639, 12974), (1937, 10978), (3278, 6487), (3874, 5489)]