18987780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{853}}^1$

素因数の和:925

約数の個数: 96

約数和(自身を含む): 61979904

約数和(自身を除く): 42992124

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 53, 60, 70, 84, 105, 106, 140, 159, 210, 212, 265, 318, 371, 420, 530, 636, 742, 795, 853, 1060, 1113, 1484, 1590, 1706, 1855, 2226, 2559, 3180, 3412, 3710, 4265, 4452, 5118, 5565, 5971, 7420, 8530, 10236, 11130, 11942, 12795, 17060, 17913, 22260, 23884, 25590, 29855, 35826, 45209, 51180, 59710, 71652, 89565, 90418, 119420, 135627, 179130, 180836, 226045, 271254, 316463, 358260, 452090, 542508, 632926, 678135, 904180, 949389, 1265852, 1356270, 1582315, 1898778, 2712540, 3164630, 3797556, 4746945, 6329260, 9493890, 18987780]

約数ペア:

[(1, 18987780), (2, 9493890), (3, 6329260), (4, 4746945), (5, 3797556), (6, 3164630), (7, 2712540), (10, 1898778), (12, 1582315), (14, 1356270), (15, 1265852), (20, 949389), (21, 904180), (28, 678135), (30, 632926), (35, 542508), (42, 452090), (53, 358260), (60, 316463), (70, 271254), (84, 226045), (105, 180836), (106, 179130), (140, 135627), (159, 119420), (210, 90418), (212, 89565), (265, 71652), (318, 59710), (371, 51180), (420, 45209), (530, 35826), (636, 29855), (742, 25590), (795, 23884), (853, 22260), (1060, 17913), (1113, 17060), (1484, 12795), (1590, 11942), (1706, 11130), (1855, 10236), (2226, 8530), (2559, 7420), (3180, 5971), (3412, 5565), (3710, 5118), (4265, 4452)]