12841720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:368

約数の個数: 64

約数和(自身を含む): 31024800

約数和(自身を除く): 18183080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 277, 305, 380, 488, 554, 610, 760, 1108, 1159, 1220, 1385, 2216, 2318, 2440, 2770, 4636, 5263, 5540, 5795, 9272, 10526, 11080, 11590, 16897, 21052, 23180, 26315, 33794, 42104, 46360, 52630, 67588, 84485, 105260, 135176, 168970, 210520, 321043, 337940, 642086, 675880, 1284172, 1605215, 2568344, 3210430, 6420860, 12841720]

約数ペア:

[(1, 12841720), (2, 6420860), (4, 3210430), (5, 2568344), (8, 1605215), (10, 1284172), (19, 675880), (20, 642086), (38, 337940), (40, 321043), (61, 210520), (76, 168970), (95, 135176), (122, 105260), (152, 84485), (190, 67588), (244, 52630), (277, 46360), (305, 42104), (380, 33794), (488, 26315), (554, 23180), (610, 21052), (760, 16897), (1108, 11590), (1159, 11080), (1220, 10526), (1385, 9272), (2216, 5795), (2318, 5540), (2440, 5263), (2770, 4636)]