20008485

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{683}}^1$

素因数の和:735

約数の個数: 64

約数和(自身を含む): 42024960

約数和(自身を除く): 22016475

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 31, 35, 45, 63, 93, 105, 135, 155, 189, 217, 279, 315, 465, 651, 683, 837, 945, 1085, 1395, 1953, 2049, 3255, 3415, 4185, 4781, 5859, 6147, 9765, 10245, 14343, 18441, 21173, 23905, 29295, 30735, 43029, 63519, 71715, 92205, 105865, 129087, 148211, 190557, 215145, 317595, 444633, 571671, 645435, 741055, 952785, 1333899, 2223165, 2858355, 4001697, 6669495, 20008485]

約数ペア:

[(1, 20008485), (3, 6669495), (5, 4001697), (7, 2858355), (9, 2223165), (15, 1333899), (21, 952785), (27, 741055), (31, 645435), (35, 571671), (45, 444633), (63, 317595), (93, 215145), (105, 190557), (135, 148211), (155, 129087), (189, 105865), (217, 92205), (279, 71715), (315, 63519), (465, 43029), (651, 30735), (683, 29295), (837, 23905), (945, 21173), (1085, 18441), (1395, 14343), (1953, 10245), (2049, 9765), (3255, 6147), (3415, 5859), (4185, 4781)]