20741450

素因数分解:

$2^1\times 5^2\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:239

約数の個数: 48

約数和(自身を含む): 40176000

約数和(自身を除く): 19434550

約数列:

[1, 2, 5, 10, 25, 50, 59, 79, 89, 118, 158, 178, 295, 395, 445, 590, 790, 890, 1475, 1975, 2225, 2950, 3950, 4450, 4661, 5251, 7031, 9322, 10502, 14062, 23305, 26255, 35155, 46610, 52510, 70310, 116525, 131275, 175775, 233050, 262550, 351550, 414829, 829658, 2074145, 4148290, 10370725, 20741450]

約数ペア:

[(1, 20741450), (2, 10370725), (5, 4148290), (10, 2074145), (25, 829658), (50, 414829), (59, 351550), (79, 262550), (89, 233050), (118, 175775), (158, 131275), (178, 116525), (295, 70310), (395, 52510), (445, 46610), (590, 35155), (790, 26255), (890, 23305), (1475, 14062), (1975, 10502), (2225, 9322), (2950, 7031), (3950, 5251), (4450, 4661)]