21239200

素因数分解:

$2^5\times 5^2\times {\mathrm{139}}^1\times {\mathrm{191}}^1$

素因数の和:350

約数の個数: 72

約数和(自身を含む): 52496640

約数和(自身を除く): 31257440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 139, 160, 191, 200, 278, 382, 400, 556, 695, 764, 800, 955, 1112, 1390, 1528, 1910, 2224, 2780, 3056, 3475, 3820, 4448, 4775, 5560, 6112, 6950, 7640, 9550, 11120, 13900, 15280, 19100, 22240, 26549, 27800, 30560, 38200, 53098, 55600, 76400, 106196, 111200, 132745, 152800, 212392, 265490, 424784, 530980, 663725, 849568, 1061960, 1327450, 2123920, 2654900, 4247840, 5309800, 10619600, 21239200]

約数ペア:

[(1, 21239200), (2, 10619600), (4, 5309800), (5, 4247840), (8, 2654900), (10, 2123920), (16, 1327450), (20, 1061960), (25, 849568), (32, 663725), (40, 530980), (50, 424784), (80, 265490), (100, 212392), (139, 152800), (160, 132745), (191, 111200), (200, 106196), (278, 76400), (382, 55600), (400, 53098), (556, 38200), (695, 30560), (764, 27800), (800, 26549), (955, 22240), (1112, 19100), (1390, 15280), (1528, 13900), (1910, 11120), (2224, 9550), (2780, 7640), (3056, 6950), (3475, 6112), (3820, 5560), (4448, 4775)]