19400120

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9151}}^1$

素因数の和:9215

約数の個数: 32

約数和(自身を含む): 44478720

約数和(自身を除く): 25078600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9151, 18302, 36604, 45755, 73208, 91510, 183020, 366040, 485003, 970006, 1940012, 2425015, 3880024, 4850030, 9700060, 19400120]

約数ペア:

[(1, 19400120), (2, 9700060), (4, 4850030), (5, 3880024), (8, 2425015), (10, 1940012), (20, 970006), (40, 485003), (53, 366040), (106, 183020), (212, 91510), (265, 73208), (424, 45755), (530, 36604), (1060, 18302), (2120, 9151)]