18947565

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{661}}^1$

素因数の和:699

約数の個数: 72

約数和(自身を含む): 41205528

約数和(自身を除く): 22257963

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 49, 63, 65, 91, 105, 117, 147, 195, 245, 273, 315, 441, 455, 585, 637, 661, 735, 819, 1365, 1911, 1983, 2205, 3185, 3305, 4095, 4627, 5733, 5949, 8593, 9555, 9915, 13881, 23135, 25779, 28665, 29745, 32389, 41643, 42965, 60151, 69405, 77337, 97167, 128895, 161945, 180453, 208215, 291501, 300755, 386685, 421057, 485835, 541359, 902265, 1263171, 1457505, 2105285, 2706795, 3789513, 6315855, 18947565]

約数ペア:

[(1, 18947565), (3, 6315855), (5, 3789513), (7, 2706795), (9, 2105285), (13, 1457505), (15, 1263171), (21, 902265), (35, 541359), (39, 485835), (45, 421057), (49, 386685), (63, 300755), (65, 291501), (91, 208215), (105, 180453), (117, 161945), (147, 128895), (195, 97167), (245, 77337), (273, 69405), (315, 60151), (441, 42965), (455, 41643), (585, 32389), (637, 29745), (661, 28665), (735, 25779), (819, 23135), (1365, 13881), (1911, 9915), (1983, 9555), (2205, 8593), (3185, 5949), (3305, 5733), (4095, 4627)]