20454500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3719}}^1$

素因数の和:3749

約数の個数: 48

約数和(自身を含む): 48746880

約数和(自身を除く): 28292380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3719, 5500, 7438, 14876, 18595, 37190, 40909, 74380, 81818, 92975, 163636, 185950, 204545, 371900, 409090, 464875, 818180, 929750, 1022725, 1859500, 2045450, 4090900, 5113625, 10227250, 20454500]

約数ペア:

[(1, 20454500), (2, 10227250), (4, 5113625), (5, 4090900), (10, 2045450), (11, 1859500), (20, 1022725), (22, 929750), (25, 818180), (44, 464875), (50, 409090), (55, 371900), (100, 204545), (110, 185950), (125, 163636), (220, 92975), (250, 81818), (275, 74380), (500, 40909), (550, 37190), (1100, 18595), (1375, 14876), (2750, 7438), (3719, 5500)]