20126900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{4909}}^1$

素因数の和:4964

約数の個数: 36

約数和(自身を含む): 44749740

約数和(自身を除く): 24622840

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 4909, 9818, 19636, 24545, 49090, 98180, 122725, 201269, 245450, 402538, 490900, 805076, 1006345, 2012690, 4025380, 5031725, 10063450, 20126900]

約数ペア:

[(1, 20126900), (2, 10063450), (4, 5031725), (5, 4025380), (10, 2012690), (20, 1006345), (25, 805076), (41, 490900), (50, 402538), (82, 245450), (100, 201269), (164, 122725), (205, 98180), (410, 49090), (820, 24545), (1025, 19636), (2050, 9818), (4100, 4909)]