20307900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{139}}^1\times {\mathrm{487}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 59301760

約数和(自身を除く): 38993860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 139, 150, 278, 300, 417, 487, 556, 695, 834, 974, 1390, 1461, 1668, 1948, 2085, 2435, 2780, 2922, 3475, 4170, 4870, 5844, 6950, 7305, 8340, 9740, 10425, 12175, 13900, 14610, 20850, 24350, 29220, 36525, 41700, 48700, 67693, 73050, 135386, 146100, 203079, 270772, 338465, 406158, 676930, 812316, 1015395, 1353860, 1692325, 2030790, 3384650, 4061580, 5076975, 6769300, 10153950, 20307900]

約数ペア:

[(1, 20307900), (2, 10153950), (3, 6769300), (4, 5076975), (5, 4061580), (6, 3384650), (10, 2030790), (12, 1692325), (15, 1353860), (20, 1015395), (25, 812316), (30, 676930), (50, 406158), (60, 338465), (75, 270772), (100, 203079), (139, 146100), (150, 135386), (278, 73050), (300, 67693), (417, 48700), (487, 41700), (556, 36525), (695, 29220), (834, 24350), (974, 20850), (1390, 14610), (1461, 13900), (1668, 12175), (1948, 10425), (2085, 9740), (2435, 8340), (2780, 7305), (2922, 6950), (3475, 5844), (4170, 4870)]