638435518

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{1307}}^1$

素因数の和:1417

約数の個数: 64

約数和(自身を含む): 1202439168

約数和(自身を除く): 564003650

約数列:

[1, 2, 7, 14, 23, 37, 41, 46, 74, 82, 161, 259, 287, 322, 518, 574, 851, 943, 1307, 1517, 1702, 1886, 2614, 3034, 5957, 6601, 9149, 10619, 11914, 13202, 18298, 21238, 30061, 34891, 48359, 53587, 60122, 69782, 96718, 107174, 210427, 244237, 338513, 375109, 420854, 488474, 677026, 750218, 1112257, 1232501, 1982719, 2224514, 2465002, 3965438, 7785799, 8627507, 13879033, 15571598, 17255014, 27758066, 45602537, 91205074, 319217759, 638435518]

約数ペア:

[(1, 638435518), (2, 319217759), (7, 91205074), (14, 45602537), (23, 27758066), (37, 17255014), (41, 15571598), (46, 13879033), (74, 8627507), (82, 7785799), (161, 3965438), (259, 2465002), (287, 2224514), (322, 1982719), (518, 1232501), (574, 1112257), (851, 750218), (943, 677026), (1307, 488474), (1517, 420854), (1702, 375109), (1886, 338513), (2614, 244237), (3034, 210427), (5957, 107174), (6601, 96718), (9149, 69782), (10619, 60122), (11914, 53587), (13202, 48359), (18298, 34891), (21238, 30061)]