31380680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25307}}^1$

素因数の和:25349

約数の個数: 32

約数和(自身を含む): 72887040

約数和(自身を除く): 41506360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 25307, 50614, 101228, 126535, 202456, 253070, 506140, 784517, 1012280, 1569034, 3138068, 3922585, 6276136, 7845170, 15690340, 31380680]

約数ペア:

[(1, 31380680), (2, 15690340), (4, 7845170), (5, 6276136), (8, 3922585), (10, 3138068), (20, 1569034), (31, 1012280), (40, 784517), (62, 506140), (124, 253070), (155, 202456), (248, 126535), (310, 101228), (620, 50614), (1240, 25307)]