21431492

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 42239232

約数和(自身を除く): 20807740

約数列:

[1, 2, 4, 17, 23, 34, 46, 68, 71, 92, 142, 193, 284, 386, 391, 772, 782, 1207, 1564, 1633, 2414, 3266, 3281, 4439, 4828, 6532, 6562, 8878, 13124, 13703, 17756, 27406, 27761, 54812, 55522, 75463, 111044, 150926, 232951, 301852, 315169, 465902, 630338, 931804, 1260676, 5357873, 10715746, 21431492]

約数ペア:

[(1, 21431492), (2, 10715746), (4, 5357873), (17, 1260676), (23, 931804), (34, 630338), (46, 465902), (68, 315169), (71, 301852), (92, 232951), (142, 150926), (193, 111044), (284, 75463), (386, 55522), (391, 54812), (772, 27761), (782, 27406), (1207, 17756), (1564, 13703), (1633, 13124), (2414, 8878), (3266, 6562), (3281, 6532), (4439, 4828)]