19660725

素因数分解:

$3^4\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:121

約数の個数: 120

約数和(自身を含む): 44411840

約数和(自身を除く): 24751115

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 27, 35, 45, 57, 63, 73, 75, 81, 95, 105, 133, 135, 171, 175, 189, 219, 225, 285, 315, 365, 399, 405, 475, 511, 513, 525, 567, 657, 665, 675, 855, 945, 1095, 1197, 1387, 1425, 1533, 1539, 1575, 1825, 1971, 1995, 2025, 2555, 2565, 2835, 3285, 3325, 3591, 4161, 4275, 4599, 4725, 5475, 5913, 5985, 6935, 7665, 7695, 9709, 9855, 9975, 10773, 12483, 12775, 12825, 13797, 14175, 16425, 17955, 20805, 22995, 29127, 29565, 29925, 34675, 37449, 38325, 38475, 41391, 48545, 49275, 53865, 62415, 68985, 87381, 89775, 104025, 112347, 114975, 145635, 147825, 187245, 206955, 242725, 262143, 269325, 312075, 344925, 436905, 561735, 728175, 786429, 936225, 1034775, 1310715, 2184525, 2808675, 3932145, 6553575, 19660725]

約数ペア:

[(1, 19660725), (3, 6553575), (5, 3932145), (7, 2808675), (9, 2184525), (15, 1310715), (19, 1034775), (21, 936225), (25, 786429), (27, 728175), (35, 561735), (45, 436905), (57, 344925), (63, 312075), (73, 269325), (75, 262143), (81, 242725), (95, 206955), (105, 187245), (133, 147825), (135, 145635), (171, 114975), (175, 112347), (189, 104025), (219, 89775), (225, 87381), (285, 68985), (315, 62415), (365, 53865), (399, 49275), (405, 48545), (475, 41391), (511, 38475), (513, 38325), (525, 37449), (567, 34675), (657, 29925), (665, 29565), (675, 29127), (855, 22995), (945, 20805), (1095, 17955), (1197, 16425), (1387, 14175), (1425, 13797), (1533, 12825), (1539, 12775), (1575, 12483), (1825, 10773), (1971, 9975), (1995, 9855), (2025, 9709), (2555, 7695), (2565, 7665), (2835, 6935), (3285, 5985), (3325, 5913), (3591, 5475), (4161, 4725), (4275, 4599)]