19910940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47407}}^1$

素因数の和:47426

約数の個数: 48

約数和(自身を含む): 63716352

約数和(自身を除く): 43805412

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 47407, 94814, 142221, 189628, 237035, 284442, 331849, 474070, 568884, 663698, 711105, 948140, 995547, 1327396, 1422210, 1659245, 1991094, 2844420, 3318490, 3982188, 4977735, 6636980, 9955470, 19910940]

約数ペア:

[(1, 19910940), (2, 9955470), (3, 6636980), (4, 4977735), (5, 3982188), (6, 3318490), (7, 2844420), (10, 1991094), (12, 1659245), (14, 1422210), (15, 1327396), (20, 995547), (21, 948140), (28, 711105), (30, 663698), (35, 568884), (42, 474070), (60, 331849), (70, 284442), (84, 237035), (105, 189628), (140, 142221), (210, 94814), (420, 47407)]