20005890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1663}}^1$

素因数の和:2074

約数の個数: 32

約数和(自身を含む): 48162816

約数和(自身を除く): 28156926

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 401, 802, 1203, 1663, 2005, 2406, 3326, 4010, 4989, 6015, 8315, 9978, 12030, 16630, 24945, 49890, 666863, 1333726, 2000589, 3334315, 4001178, 6668630, 10002945, 20005890]

約数ペア:

[(1, 20005890), (2, 10002945), (3, 6668630), (5, 4001178), (6, 3334315), (10, 2000589), (15, 1333726), (30, 666863), (401, 49890), (802, 24945), (1203, 16630), (1663, 12030), (2005, 9978), (2406, 8315), (3326, 6015), (4010, 4989)]