205120900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{883}}^1$

素因数の和:1021

約数の個数: 72

約数和(自身を含む): 469594944

約数和(自身を除く): 264474044

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 101, 115, 202, 230, 404, 460, 505, 575, 883, 1010, 1150, 1766, 2020, 2300, 2323, 2525, 3532, 4415, 4646, 5050, 8830, 9292, 10100, 11615, 17660, 20309, 22075, 23230, 40618, 44150, 46460, 58075, 81236, 88300, 89183, 101545, 116150, 178366, 203090, 232300, 356732, 406180, 445915, 507725, 891830, 1015450, 1783660, 2030900, 2051209, 2229575, 4102418, 4459150, 8204836, 8918300, 10256045, 20512090, 41024180, 51280225, 102560450, 205120900]

約数ペア:

[(1, 205120900), (2, 102560450), (4, 51280225), (5, 41024180), (10, 20512090), (20, 10256045), (23, 8918300), (25, 8204836), (46, 4459150), (50, 4102418), (92, 2229575), (100, 2051209), (101, 2030900), (115, 1783660), (202, 1015450), (230, 891830), (404, 507725), (460, 445915), (505, 406180), (575, 356732), (883, 232300), (1010, 203090), (1150, 178366), (1766, 116150), (2020, 101545), (2300, 89183), (2323, 88300), (2525, 81236), (3532, 58075), (4415, 46460), (4646, 44150), (5050, 40618), (8830, 23230), (9292, 22075), (10100, 20309), (11615, 17660)]