25020980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{20509}}^1$

素因数の和:20579

約数の個数: 24

約数和(自身を含む): 53408040

約数和(自身を除く): 28387060

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 20509, 41018, 82036, 102545, 205090, 410180, 1251049, 2502098, 5004196, 6255245, 12510490, 25020980]

約数ペア:

[(1, 25020980), (2, 12510490), (4, 6255245), (5, 5004196), (10, 2502098), (20, 1251049), (61, 410180), (122, 205090), (244, 102545), (305, 82036), (610, 41018), (1220, 20509)]