20617695

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:145

約数の個数: 96

約数和(自身を含む): 44104320

約数和(自身を除く): 23486625

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 37, 45, 61, 63, 87, 105, 111, 145, 183, 185, 203, 259, 261, 305, 315, 333, 427, 435, 549, 555, 609, 777, 915, 1015, 1073, 1281, 1295, 1305, 1665, 1769, 1827, 2135, 2257, 2331, 2745, 3045, 3219, 3843, 3885, 5307, 5365, 6405, 6771, 7511, 8845, 9135, 9657, 11285, 11655, 12383, 15799, 15921, 16095, 19215, 20313, 22533, 26535, 33855, 37149, 37555, 47397, 48285, 61915, 65453, 67599, 78995, 79605, 101565, 111447, 112665, 142191, 185745, 196359, 236985, 327265, 337995, 458171, 557235, 589077, 710955, 981795, 1374513, 2290855, 2945385, 4123539, 6872565, 20617695]

約数ペア:

[(1, 20617695), (3, 6872565), (5, 4123539), (7, 2945385), (9, 2290855), (15, 1374513), (21, 981795), (29, 710955), (35, 589077), (37, 557235), (45, 458171), (61, 337995), (63, 327265), (87, 236985), (105, 196359), (111, 185745), (145, 142191), (183, 112665), (185, 111447), (203, 101565), (259, 79605), (261, 78995), (305, 67599), (315, 65453), (333, 61915), (427, 48285), (435, 47397), (549, 37555), (555, 37149), (609, 33855), (777, 26535), (915, 22533), (1015, 20313), (1073, 19215), (1281, 16095), (1295, 15921), (1305, 15799), (1665, 12383), (1769, 11655), (1827, 11285), (2135, 9657), (2257, 9135), (2331, 8845), (2745, 7511), (3045, 6771), (3219, 6405), (3843, 5365), (3885, 5307)]