28144280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{22697}}^1$

素因数の和:22739

約数の個数: 32

約数和(自身を含む): 65370240

約数和(自身を除く): 37225960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 22697, 45394, 90788, 113485, 181576, 226970, 453940, 703607, 907880, 1407214, 2814428, 3518035, 5628856, 7036070, 14072140, 28144280]

約数ペア:

[(1, 28144280), (2, 14072140), (4, 7036070), (5, 5628856), (8, 3518035), (10, 2814428), (20, 1407214), (31, 907880), (40, 703607), (62, 453940), (124, 226970), (155, 181576), (248, 113485), (310, 90788), (620, 45394), (1240, 22697)]