20513612

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{167}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 22161076

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 107, 164, 167, 214, 287, 334, 428, 574, 668, 749, 1148, 1169, 1498, 2338, 2996, 4387, 4676, 6847, 8774, 13694, 17548, 17869, 27388, 30709, 35738, 47929, 61418, 71476, 95858, 122836, 125083, 191716, 250166, 500332, 732629, 1465258, 2930516, 5128403, 10256806, 20513612]

約数ペア:

[(1, 20513612), (2, 10256806), (4, 5128403), (7, 2930516), (14, 1465258), (28, 732629), (41, 500332), (82, 250166), (107, 191716), (164, 125083), (167, 122836), (214, 95858), (287, 71476), (334, 61418), (428, 47929), (574, 35738), (668, 30709), (749, 27388), (1148, 17869), (1169, 17548), (1498, 13694), (2338, 8774), (2996, 6847), (4387, 4676)]