21244280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27953}}^1$

素因数の和:27983

約数の個数: 32

約数和(自身を含む): 50317200

約数和(自身を除く): 29072920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27953, 55906, 111812, 139765, 223624, 279530, 531107, 559060, 1062214, 1118120, 2124428, 2655535, 4248856, 5311070, 10622140, 21244280]

約数ペア:

[(1, 21244280), (2, 10622140), (4, 5311070), (5, 4248856), (8, 2655535), (10, 2124428), (19, 1118120), (20, 1062214), (38, 559060), (40, 531107), (76, 279530), (95, 223624), (152, 139765), (190, 111812), (380, 55906), (760, 27953)]