25683440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:370

約数の個数: 80

約数和(自身を含む): 64117920

約数和(自身を除く): 38434480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 61, 76, 80, 95, 122, 152, 190, 244, 277, 304, 305, 380, 488, 554, 610, 760, 976, 1108, 1159, 1220, 1385, 1520, 2216, 2318, 2440, 2770, 4432, 4636, 4880, 5263, 5540, 5795, 9272, 10526, 11080, 11590, 16897, 18544, 21052, 22160, 23180, 26315, 33794, 42104, 46360, 52630, 67588, 84208, 84485, 92720, 105260, 135176, 168970, 210520, 270352, 321043, 337940, 421040, 642086, 675880, 1284172, 1351760, 1605215, 2568344, 3210430, 5136688, 6420860, 12841720, 25683440]

約数ペア:

[(1, 25683440), (2, 12841720), (4, 6420860), (5, 5136688), (8, 3210430), (10, 2568344), (16, 1605215), (19, 1351760), (20, 1284172), (38, 675880), (40, 642086), (61, 421040), (76, 337940), (80, 321043), (95, 270352), (122, 210520), (152, 168970), (190, 135176), (244, 105260), (277, 92720), (304, 84485), (305, 84208), (380, 67588), (488, 52630), (554, 46360), (610, 42104), (760, 33794), (976, 26315), (1108, 23180), (1159, 22160), (1220, 21052), (1385, 18544), (1520, 16897), (2216, 11590), (2318, 11080), (2440, 10526), (2770, 9272), (4432, 5795), (4636, 5540), (4880, 5263)]