25556540

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{317}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 56095200

約数和(自身を除く): 30538660

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 317, 556, 580, 634, 695, 1268, 1390, 1585, 2780, 3170, 4031, 6340, 8062, 9193, 16124, 18386, 20155, 36772, 40310, 44063, 45965, 80620, 88126, 91930, 176252, 183860, 220315, 440630, 881260, 1277827, 2555654, 5111308, 6389135, 12778270, 25556540]

約数ペア:

[(1, 25556540), (2, 12778270), (4, 6389135), (5, 5111308), (10, 2555654), (20, 1277827), (29, 881260), (58, 440630), (116, 220315), (139, 183860), (145, 176252), (278, 91930), (290, 88126), (317, 80620), (556, 45965), (580, 44063), (634, 40310), (695, 36772), (1268, 20155), (1390, 18386), (1585, 16124), (2780, 9193), (3170, 8062), (4031, 6340)]