20498625

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1$

素因数の和:184

約数の個数: 96

約数和(自身を含む): 44778240

約数和(自身を除く): 24279615

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 35, 45, 57, 63, 75, 95, 105, 125, 133, 137, 171, 175, 225, 285, 315, 375, 399, 411, 475, 525, 665, 685, 855, 875, 959, 1125, 1197, 1233, 1425, 1575, 1995, 2055, 2375, 2603, 2625, 2877, 3325, 3425, 4275, 4795, 5985, 6165, 7125, 7809, 7875, 8631, 9975, 10275, 13015, 14385, 16625, 17125, 18221, 21375, 23427, 23975, 29925, 30825, 39045, 43155, 49875, 51375, 54663, 65075, 71925, 91105, 117135, 119875, 149625, 154125, 163989, 195225, 215775, 273315, 325375, 359625, 455525, 585675, 819945, 976125, 1078875, 1366575, 2277625, 2928375, 4099725, 6832875, 20498625]

約数ペア:

[(1, 20498625), (3, 6832875), (5, 4099725), (7, 2928375), (9, 2277625), (15, 1366575), (19, 1078875), (21, 976125), (25, 819945), (35, 585675), (45, 455525), (57, 359625), (63, 325375), (75, 273315), (95, 215775), (105, 195225), (125, 163989), (133, 154125), (137, 149625), (171, 119875), (175, 117135), (225, 91105), (285, 71925), (315, 65075), (375, 54663), (399, 51375), (411, 49875), (475, 43155), (525, 39045), (665, 30825), (685, 29925), (855, 23975), (875, 23427), (959, 21375), (1125, 18221), (1197, 17125), (1233, 16625), (1425, 14385), (1575, 13015), (1995, 10275), (2055, 9975), (2375, 8631), (2603, 7875), (2625, 7809), (2877, 7125), (3325, 6165), (3425, 5985), (4275, 4795)]