19786000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{761}}^1$

素因数の和:797

約数の個数: 80

約数和(自身を含む): 51590448

約数和(自身を除く): 31804448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 200, 208, 250, 260, 325, 400, 500, 520, 650, 761, 1000, 1040, 1300, 1522, 1625, 2000, 2600, 3044, 3250, 3805, 5200, 6088, 6500, 7610, 9893, 12176, 13000, 15220, 19025, 19786, 26000, 30440, 38050, 39572, 49465, 60880, 76100, 79144, 95125, 98930, 152200, 158288, 190250, 197860, 247325, 304400, 380500, 395720, 494650, 761000, 791440, 989300, 1236625, 1522000, 1978600, 2473250, 3957200, 4946500, 9893000, 19786000]

約数ペア:

[(1, 19786000), (2, 9893000), (4, 4946500), (5, 3957200), (8, 2473250), (10, 1978600), (13, 1522000), (16, 1236625), (20, 989300), (25, 791440), (26, 761000), (40, 494650), (50, 395720), (52, 380500), (65, 304400), (80, 247325), (100, 197860), (104, 190250), (125, 158288), (130, 152200), (200, 98930), (208, 95125), (250, 79144), (260, 76100), (325, 60880), (400, 49465), (500, 39572), (520, 38050), (650, 30440), (761, 26000), (1000, 19786), (1040, 19025), (1300, 15220), (1522, 13000), (1625, 12176), (2000, 9893), (2600, 7610), (3044, 6500), (3250, 6088), (3805, 5200)]