20927835

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:273

約数の個数: 64

約数和(自身を含む): 40320000

約数和(自身を除く): 19392165

約数列:

[1, 3, 5, 9, 15, 19, 27, 41, 45, 57, 95, 123, 135, 171, 199, 205, 285, 369, 513, 597, 615, 779, 855, 995, 1107, 1791, 1845, 2337, 2565, 2985, 3781, 3895, 5373, 5535, 7011, 8159, 8955, 11343, 11685, 18905, 21033, 24477, 26865, 34029, 35055, 40795, 56715, 73431, 102087, 105165, 122385, 155021, 170145, 220293, 367155, 465063, 510435, 775105, 1101465, 1395189, 2325315, 4185567, 6975945, 20927835]

約数ペア:

[(1, 20927835), (3, 6975945), (5, 4185567), (9, 2325315), (15, 1395189), (19, 1101465), (27, 775105), (41, 510435), (45, 465063), (57, 367155), (95, 220293), (123, 170145), (135, 155021), (171, 122385), (199, 105165), (205, 102087), (285, 73431), (369, 56715), (513, 40795), (597, 35055), (615, 34029), (779, 26865), (855, 24477), (995, 21033), (1107, 18905), (1791, 11685), (1845, 11343), (2337, 8955), (2565, 8159), (2985, 7011), (3781, 5535), (3895, 5373)]