201512840

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{20071}}^1$

素因数の和:20333

約数の個数: 32

約数和(自身を含む): 455232960

約数和(自身を除く): 253720120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 20071, 40142, 80284, 100355, 160568, 200710, 401420, 802840, 5037821, 10075642, 20151284, 25189105, 40302568, 50378210, 100756420, 201512840]

約数ペア:

[(1, 201512840), (2, 100756420), (4, 50378210), (5, 40302568), (8, 25189105), (10, 20151284), (20, 10075642), (40, 5037821), (251, 802840), (502, 401420), (1004, 200710), (1255, 160568), (2008, 100355), (2510, 80284), (5020, 40142), (10040, 20071)]