19902780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{36857}}^1$

素因数の和:36875

約数の個数: 48

約数和(自身を含む): 61921440

約数和(自身を除く): 42018660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 36857, 73714, 110571, 147428, 184285, 221142, 331713, 368570, 442284, 552855, 663426, 737140, 995139, 1105710, 1326852, 1658565, 1990278, 2211420, 3317130, 3980556, 4975695, 6634260, 9951390, 19902780]

約数ペア:

[(1, 19902780), (2, 9951390), (3, 6634260), (4, 4975695), (5, 3980556), (6, 3317130), (9, 2211420), (10, 1990278), (12, 1658565), (15, 1326852), (18, 1105710), (20, 995139), (27, 737140), (30, 663426), (36, 552855), (45, 442284), (54, 368570), (60, 331713), (90, 221142), (108, 184285), (135, 147428), (180, 110571), (270, 73714), (540, 36857)]