20296575

素因数分解:

$3^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1$

素因数の和:295

約数の個数: 72

約数和(自身を含む): 40757808

約数和(自身を除く): 20461233

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 81, 117, 135, 195, 225, 243, 257, 325, 351, 405, 585, 675, 771, 975, 1053, 1215, 1285, 1755, 2025, 2313, 2925, 3159, 3341, 3855, 5265, 6075, 6425, 6939, 8775, 10023, 11565, 15795, 16705, 19275, 20817, 26325, 30069, 34695, 50115, 57825, 62451, 78975, 83525, 90207, 104085, 150345, 173475, 250575, 270621, 312255, 451035, 520425, 751725, 811863, 1353105, 1561275, 2255175, 4059315, 6765525, 20296575]

約数ペア:

[(1, 20296575), (3, 6765525), (5, 4059315), (9, 2255175), (13, 1561275), (15, 1353105), (25, 811863), (27, 751725), (39, 520425), (45, 451035), (65, 312255), (75, 270621), (81, 250575), (117, 173475), (135, 150345), (195, 104085), (225, 90207), (243, 83525), (257, 78975), (325, 62451), (351, 57825), (405, 50115), (585, 34695), (675, 30069), (771, 26325), (975, 20817), (1053, 19275), (1215, 16705), (1285, 15795), (1755, 11565), (2025, 10023), (2313, 8775), (2925, 6939), (3159, 6425), (3341, 6075), (3855, 5265)]