19932920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{277}}^1$

素因数の和:552

約数の個数: 64

約数和(自身を含む): 51641280

約数和(自身を除く): 31708360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 257, 277, 280, 514, 554, 1028, 1108, 1285, 1385, 1799, 1939, 2056, 2216, 2570, 2770, 3598, 3878, 5140, 5540, 7196, 7756, 8995, 9695, 10280, 11080, 14392, 15512, 17990, 19390, 35980, 38780, 71189, 71960, 77560, 142378, 284756, 355945, 498323, 569512, 711890, 996646, 1423780, 1993292, 2491615, 2847560, 3986584, 4983230, 9966460, 19932920]

約数ペア:

[(1, 19932920), (2, 9966460), (4, 4983230), (5, 3986584), (7, 2847560), (8, 2491615), (10, 1993292), (14, 1423780), (20, 996646), (28, 711890), (35, 569512), (40, 498323), (56, 355945), (70, 284756), (140, 142378), (257, 77560), (277, 71960), (280, 71189), (514, 38780), (554, 35980), (1028, 19390), (1108, 17990), (1285, 15512), (1385, 14392), (1799, 11080), (1939, 10280), (2056, 9695), (2216, 8995), (2570, 7756), (2770, 7196), (3598, 5540), (3878, 5140)]