189798904

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:548

約数の個数: 64

約数和(自身を含む): 389664000

約数和(自身を除く): 199865096

約数列:

[1, 2, 4, 8, 19, 38, 43, 71, 76, 86, 142, 152, 172, 284, 344, 409, 568, 817, 818, 1349, 1634, 1636, 2698, 3053, 3268, 3272, 5396, 6106, 6536, 7771, 10792, 12212, 15542, 17587, 24424, 29039, 31084, 35174, 58007, 58078, 62168, 70348, 116014, 116156, 140696, 232028, 232312, 334153, 464056, 551741, 668306, 1103482, 1248677, 1336612, 2206964, 2497354, 2673224, 4413928, 4994708, 9989416, 23724863, 47449726, 94899452, 189798904]

約数ペア:

[(1, 189798904), (2, 94899452), (4, 47449726), (8, 23724863), (19, 9989416), (38, 4994708), (43, 4413928), (71, 2673224), (76, 2497354), (86, 2206964), (142, 1336612), (152, 1248677), (172, 1103482), (284, 668306), (344, 551741), (409, 464056), (568, 334153), (817, 232312), (818, 232028), (1349, 140696), (1634, 116156), (1636, 116014), (2698, 70348), (3053, 62168), (3268, 58078), (3272, 58007), (5396, 35174), (6106, 31084), (6536, 29039), (7771, 24424), (10792, 17587), (12212, 15542)]