21296720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14011}}^1$

素因数の和:14043

約数の個数: 40

約数和(自身を含む): 52124640

約数和(自身を除く): 30827920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14011, 28022, 56044, 70055, 112088, 140110, 224176, 266209, 280220, 532418, 560440, 1064836, 1120880, 1331045, 2129672, 2662090, 4259344, 5324180, 10648360, 21296720]

約数ペア:

[(1, 21296720), (2, 10648360), (4, 5324180), (5, 4259344), (8, 2662090), (10, 2129672), (16, 1331045), (19, 1120880), (20, 1064836), (38, 560440), (40, 532418), (76, 280220), (80, 266209), (95, 224176), (152, 140110), (190, 112088), (304, 70055), (380, 56044), (760, 28022), (1520, 14011)]