20120905

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{383}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 29491200

約数和(自身を除く): 9370295

約数列:

[1, 5, 7, 19, 35, 79, 95, 133, 383, 395, 553, 665, 1501, 1915, 2681, 2765, 7277, 7505, 10507, 13405, 30257, 36385, 50939, 52535, 151285, 211799, 254695, 574883, 1058995, 2874415, 4024181, 20120905]

約数ペア:

[(1, 20120905), (5, 4024181), (7, 2874415), (19, 1058995), (35, 574883), (79, 254695), (95, 211799), (133, 151285), (383, 52535), (395, 50939), (553, 36385), (665, 30257), (1501, 13405), (1915, 10507), (2681, 7505), (2765, 7277)]