19915380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110641}}^1$

素因数の和:110656

約数の個数: 36

約数和(自身を含む): 60410532

約数和(自身を除く): 40495152

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110641, 221282, 331923, 442564, 553205, 663846, 995769, 1106410, 1327692, 1659615, 1991538, 2212820, 3319230, 3983076, 4978845, 6638460, 9957690, 19915380]

約数ペア:

[(1, 19915380), (2, 9957690), (3, 6638460), (4, 4978845), (5, 3983076), (6, 3319230), (9, 2212820), (10, 1991538), (12, 1659615), (15, 1327692), (18, 1106410), (20, 995769), (30, 663846), (36, 553205), (45, 442564), (60, 331923), (90, 221282), (180, 110641)]