16861905

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 31968000

約数和(自身を除く): 15106095

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 59, 73, 87, 135, 145, 177, 219, 261, 295, 365, 435, 531, 657, 783, 885, 1095, 1305, 1593, 1711, 1971, 2117, 2655, 3285, 3915, 4307, 5133, 6351, 7965, 8555, 9855, 10585, 12921, 15399, 19053, 21535, 25665, 31755, 38763, 46197, 57159, 64605, 76995, 95265, 116289, 124903, 193815, 230985, 285795, 374709, 581445, 624515, 1124127, 1873545, 3372381, 5620635, 16861905]

約数ペア:

[(1, 16861905), (3, 5620635), (5, 3372381), (9, 1873545), (15, 1124127), (27, 624515), (29, 581445), (45, 374709), (59, 285795), (73, 230985), (87, 193815), (135, 124903), (145, 116289), (177, 95265), (219, 76995), (261, 64605), (295, 57159), (365, 46197), (435, 38763), (531, 31755), (657, 25665), (783, 21535), (885, 19053), (1095, 15399), (1305, 12921), (1593, 10585), (1711, 9855), (1971, 8555), (2117, 7965), (2655, 6351), (3285, 5133), (3915, 4307)]