1978600

素因数分解:

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

素因数の和:790

約数の個数: 48

約数和(自身を含む): 4960620

約数和(自身を除く): 2982020

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 761, 1300, 1522, 2600, 3044, 3805, 6088, 7610, 9893, 15220, 19025, 19786, 30440, 38050, 39572, 49465, 76100, 79144, 98930, 152200, 197860, 247325, 395720, 494650, 989300, 1978600]

約数ペア:

[(1, 1978600), (2, 989300), (4, 494650), (5, 395720), (8, 247325), (10, 197860), (13, 152200), (20, 98930), (25, 79144), (26, 76100), (40, 49465), (50, 39572), (52, 38050), (65, 30440), (100, 19786), (104, 19025), (130, 15220), (200, 9893), (260, 7610), (325, 6088), (520, 3805), (650, 3044), (761, 2600), (1300, 1522)]