19785376

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:461

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 22550624

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 199, 208, 239, 398, 416, 478, 796, 956, 1592, 1912, 2587, 3107, 3184, 3824, 5174, 6214, 6368, 7648, 10348, 12428, 20696, 24856, 41392, 47561, 49712, 82784, 95122, 99424, 190244, 380488, 618293, 760976, 1236586, 1521952, 2473172, 4946344, 9892688, 19785376]

約数ペア:

[(1, 19785376), (2, 9892688), (4, 4946344), (8, 2473172), (13, 1521952), (16, 1236586), (26, 760976), (32, 618293), (52, 380488), (104, 190244), (199, 99424), (208, 95122), (239, 82784), (398, 49712), (416, 47561), (478, 41392), (796, 24856), (956, 20696), (1592, 12428), (1912, 10348), (2587, 7648), (3107, 6368), (3184, 6214), (3824, 5174)]