8219780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 18439680

約数和(自身を除く): 10219900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 97, 190, 194, 223, 380, 388, 446, 485, 892, 970, 1115, 1843, 1940, 2230, 3686, 4237, 4460, 7372, 8474, 9215, 16948, 18430, 21185, 21631, 36860, 42370, 43262, 84740, 86524, 108155, 216310, 410989, 432620, 821978, 1643956, 2054945, 4109890, 8219780]

約数ペア:

[(1, 8219780), (2, 4109890), (4, 2054945), (5, 1643956), (10, 821978), (19, 432620), (20, 410989), (38, 216310), (76, 108155), (95, 86524), (97, 84740), (190, 43262), (194, 42370), (223, 36860), (380, 21631), (388, 21185), (446, 18430), (485, 16948), (892, 9215), (970, 8474), (1115, 7372), (1843, 4460), (1940, 4237), (2230, 3686)]