20954080

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{353}}^1$

素因数の和:428

約数の個数: 96

約数和(自身を含む): 57806784

約数和(自身を除く): 36852704

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 53, 56, 70, 80, 106, 112, 140, 160, 212, 224, 265, 280, 353, 371, 424, 530, 560, 706, 742, 848, 1060, 1120, 1412, 1484, 1696, 1765, 1855, 2120, 2471, 2824, 2968, 3530, 3710, 4240, 4942, 5648, 5936, 7060, 7420, 8480, 9884, 11296, 11872, 12355, 14120, 14840, 18709, 19768, 24710, 28240, 29680, 37418, 39536, 49420, 56480, 59360, 74836, 79072, 93545, 98840, 130963, 149672, 187090, 197680, 261926, 299344, 374180, 395360, 523852, 598688, 654815, 748360, 1047704, 1309630, 1496720, 2095408, 2619260, 2993440, 4190816, 5238520, 10477040, 20954080]

約数ペア:

[(1, 20954080), (2, 10477040), (4, 5238520), (5, 4190816), (7, 2993440), (8, 2619260), (10, 2095408), (14, 1496720), (16, 1309630), (20, 1047704), (28, 748360), (32, 654815), (35, 598688), (40, 523852), (53, 395360), (56, 374180), (70, 299344), (80, 261926), (106, 197680), (112, 187090), (140, 149672), (160, 130963), (212, 98840), (224, 93545), (265, 79072), (280, 74836), (353, 59360), (371, 56480), (424, 49420), (530, 39536), (560, 37418), (706, 29680), (742, 28240), (848, 24710), (1060, 19768), (1120, 18709), (1412, 14840), (1484, 14120), (1696, 12355), (1765, 11872), (1855, 11296), (2120, 9884), (2471, 8480), (2824, 7420), (2968, 7060), (3530, 5936), (3710, 5648), (4240, 4942)]