20217760

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7433}}^1$

素因数の和:7465

約数の個数: 48

約数和(自身を含む): 50580936

約数和(自身を除く): 30363176

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7433, 14866, 29732, 37165, 59464, 74330, 118928, 126361, 148660, 237856, 252722, 297320, 505444, 594640, 631805, 1010888, 1189280, 1263610, 2021776, 2527220, 4043552, 5054440, 10108880, 20217760]

約数ペア:

[(1, 20217760), (2, 10108880), (4, 5054440), (5, 4043552), (8, 2527220), (10, 2021776), (16, 1263610), (17, 1189280), (20, 1010888), (32, 631805), (34, 594640), (40, 505444), (68, 297320), (80, 252722), (85, 237856), (136, 148660), (160, 126361), (170, 118928), (272, 74330), (340, 59464), (544, 37165), (680, 29732), (1360, 14866), (2720, 7433)]