31561880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{16103}}^1$

素因数の和:16128

約数の個数: 48

約数和(自身を含む): 82613520

約数和(自身を除く): 51051640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 16103, 32206, 64412, 80515, 112721, 128824, 161030, 225442, 322060, 450884, 563605, 644120, 789047, 901768, 1127210, 1578094, 2254420, 3156188, 3945235, 4508840, 6312376, 7890470, 15780940, 31561880]

約数ペア:

[(1, 31561880), (2, 15780940), (4, 7890470), (5, 6312376), (7, 4508840), (8, 3945235), (10, 3156188), (14, 2254420), (20, 1578094), (28, 1127210), (35, 901768), (40, 789047), (49, 644120), (56, 563605), (70, 450884), (98, 322060), (140, 225442), (196, 161030), (245, 128824), (280, 112721), (392, 80515), (490, 64412), (980, 32206), (1960, 16103)]