20414565

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:179

約数の個数: 64

約数和(自身を含む): 38449920

約数和(自身を除く): 18035355

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 61, 67, 111, 135, 183, 185, 201, 305, 333, 335, 549, 555, 603, 915, 999, 1005, 1647, 1665, 1809, 2257, 2479, 2745, 3015, 4087, 4995, 6771, 7437, 8235, 9045, 11285, 12261, 12395, 20313, 20435, 22311, 33855, 36783, 37185, 60939, 61305, 66933, 101565, 110349, 111555, 151219, 183915, 304695, 334665, 453657, 551745, 756095, 1360971, 2268285, 4082913, 6804855, 20414565]

約数ペア:

[(1, 20414565), (3, 6804855), (5, 4082913), (9, 2268285), (15, 1360971), (27, 756095), (37, 551745), (45, 453657), (61, 334665), (67, 304695), (111, 183915), (135, 151219), (183, 111555), (185, 110349), (201, 101565), (305, 66933), (333, 61305), (335, 60939), (549, 37185), (555, 36783), (603, 33855), (915, 22311), (999, 20435), (1005, 20313), (1647, 12395), (1665, 12261), (1809, 11285), (2257, 9045), (2479, 8235), (2745, 7437), (3015, 6771), (4087, 4995)]