20658825

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{491}}^1$

素因数の和:535

約数の個数: 72

約数和(自身を含む): 42827616

約数和(自身を除く): 22168791

約数列:

[1, 3, 5, 9, 11, 15, 17, 25, 33, 45, 51, 55, 75, 85, 99, 153, 165, 187, 225, 255, 275, 425, 491, 495, 561, 765, 825, 935, 1275, 1473, 1683, 2455, 2475, 2805, 3825, 4419, 4675, 5401, 7365, 8347, 8415, 12275, 14025, 16203, 22095, 25041, 27005, 36825, 41735, 42075, 48609, 75123, 81015, 91817, 110475, 125205, 135025, 208675, 243045, 275451, 375615, 405075, 459085, 626025, 826353, 1215225, 1377255, 1878075, 2295425, 4131765, 6886275, 20658825]

約数ペア:

[(1, 20658825), (3, 6886275), (5, 4131765), (9, 2295425), (11, 1878075), (15, 1377255), (17, 1215225), (25, 826353), (33, 626025), (45, 459085), (51, 405075), (55, 375615), (75, 275451), (85, 243045), (99, 208675), (153, 135025), (165, 125205), (187, 110475), (225, 91817), (255, 81015), (275, 75123), (425, 48609), (491, 42075), (495, 41735), (561, 36825), (765, 27005), (825, 25041), (935, 22095), (1275, 16203), (1473, 14025), (1683, 12275), (2455, 8415), (2475, 8347), (2805, 7365), (3825, 5401), (4419, 4675)]