20122515

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{503}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 40255488

約数和(自身を除く): 20132973

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 127, 315, 381, 503, 635, 889, 1143, 1509, 1905, 2515, 2667, 3521, 4445, 4527, 5715, 7545, 8001, 10563, 13335, 17605, 22635, 31689, 40005, 52815, 63881, 158445, 191643, 319405, 447167, 574929, 958215, 1341501, 2235835, 2874645, 4024503, 6707505, 20122515]

約数ペア:

[(1, 20122515), (3, 6707505), (5, 4024503), (7, 2874645), (9, 2235835), (15, 1341501), (21, 958215), (35, 574929), (45, 447167), (63, 319405), (105, 191643), (127, 158445), (315, 63881), (381, 52815), (503, 40005), (635, 31689), (889, 22635), (1143, 17605), (1509, 13335), (1905, 10563), (2515, 8001), (2667, 7545), (3521, 5715), (4445, 4527)]