19729780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2659}}^1$

素因数の和:2728

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 28533260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 106, 140, 212, 265, 371, 530, 742, 1060, 1484, 1855, 2659, 3710, 5318, 7420, 10636, 13295, 18613, 26590, 37226, 53180, 74452, 93065, 140927, 186130, 281854, 372260, 563708, 704635, 986489, 1409270, 1972978, 2818540, 3945956, 4932445, 9864890, 19729780]

約数ペア:

[(1, 19729780), (2, 9864890), (4, 4932445), (5, 3945956), (7, 2818540), (10, 1972978), (14, 1409270), (20, 986489), (28, 704635), (35, 563708), (53, 372260), (70, 281854), (106, 186130), (140, 140927), (212, 93065), (265, 74452), (371, 53180), (530, 37226), (742, 26590), (1060, 18613), (1484, 13295), (1855, 10636), (2659, 7420), (3710, 5318)]