21959440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14447}}^1$

素因数の和:14479

約数の個数: 40

約数和(自身を含む): 53746560

約数和(自身を除く): 31787120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14447, 28894, 57788, 72235, 115576, 144470, 231152, 274493, 288940, 548986, 577880, 1097972, 1155760, 1372465, 2195944, 2744930, 4391888, 5489860, 10979720, 21959440]

約数ペア:

[(1, 21959440), (2, 10979720), (4, 5489860), (5, 4391888), (8, 2744930), (10, 2195944), (16, 1372465), (19, 1155760), (20, 1097972), (38, 577880), (40, 548986), (76, 288940), (80, 274493), (95, 231152), (152, 144470), (190, 115576), (304, 72235), (380, 57788), (760, 28894), (1520, 14447)]