25072820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 55036800

約数和(自身を除く): 29963980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 311, 556, 580, 622, 695, 1244, 1390, 1555, 2780, 3110, 4031, 6220, 8062, 9019, 16124, 18038, 20155, 36076, 40310, 43229, 45095, 80620, 86458, 90190, 172916, 180380, 216145, 432290, 864580, 1253641, 2507282, 5014564, 6268205, 12536410, 25072820]

約数ペア:

[(1, 25072820), (2, 12536410), (4, 6268205), (5, 5014564), (10, 2507282), (20, 1253641), (29, 864580), (58, 432290), (116, 216145), (139, 180380), (145, 172916), (278, 90190), (290, 86458), (311, 80620), (556, 45095), (580, 43229), (622, 40310), (695, 36076), (1244, 20155), (1390, 18038), (1555, 16124), (2780, 9019), (3110, 8062), (4031, 6220)]