20184466520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{149161}}^1$

素因数の和:149388

約数の個数: 64

約数和(自身を含む): 48328488000

約数和(自身を除く): 28144021480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 199, 340, 398, 680, 796, 995, 1592, 1990, 3383, 3980, 6766, 7960, 13532, 16915, 27064, 33830, 67660, 135320, 149161, 298322, 596644, 745805, 1193288, 1491610, 2535737, 2983220, 5071474, 5966440, 10142948, 12678685, 20285896, 25357370, 29683039, 50714740, 59366078, 101429480, 118732156, 148415195, 237464312, 296830390, 504611663, 593660780, 1009223326, 1187321560, 2018446652, 2523058315, 4036893304, 5046116630, 10092233260, 20184466520]

約数ペア:

[(1, 20184466520), (2, 10092233260), (4, 5046116630), (5, 4036893304), (8, 2523058315), (10, 2018446652), (17, 1187321560), (20, 1009223326), (34, 593660780), (40, 504611663), (68, 296830390), (85, 237464312), (136, 148415195), (170, 118732156), (199, 101429480), (340, 59366078), (398, 50714740), (680, 29683039), (796, 25357370), (995, 20285896), (1592, 12678685), (1990, 10142948), (3383, 5966440), (3980, 5071474), (6766, 2983220), (7960, 2535737), (13532, 1491610), (16915, 1193288), (27064, 745805), (33830, 596644), (67660, 298322), (135320, 149161)]