15780940

素因数分解:

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

素因数の和:16126

約数の個数: 36

約数和(自身を含む): 38552976

約数和(自身を除く): 22772036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 16103, 32206, 64412, 80515, 112721, 161030, 225442, 322060, 450884, 563605, 789047, 1127210, 1578094, 2254420, 3156188, 3945235, 7890470, 15780940]

約数ペア:

[(1, 15780940), (2, 7890470), (4, 3945235), (5, 3156188), (7, 2254420), (10, 1578094), (14, 1127210), (20, 789047), (28, 563605), (35, 450884), (49, 322060), (70, 225442), (98, 161030), (140, 112721), (196, 80515), (245, 64412), (490, 32206), (980, 16103)]