20781984

素因数分解:

$2^5\times 3^1\times {\mathrm{71}}^1\times {\mathrm{3049}}^1$

素因数の和:3133

約数の個数: 48

約数和(自身を含む): 55339200

約数和(自身を除く): 34557216

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 71, 96, 142, 213, 284, 426, 568, 852, 1136, 1704, 2272, 3049, 3408, 6098, 6816, 9147, 12196, 18294, 24392, 36588, 48784, 73176, 97568, 146352, 216479, 292704, 432958, 649437, 865916, 1298874, 1731832, 2597748, 3463664, 5195496, 6927328, 10390992, 20781984]

約数ペア:

[(1, 20781984), (2, 10390992), (3, 6927328), (4, 5195496), (6, 3463664), (8, 2597748), (12, 1731832), (16, 1298874), (24, 865916), (32, 649437), (48, 432958), (71, 292704), (96, 216479), (142, 146352), (213, 97568), (284, 73176), (426, 48784), (568, 36588), (852, 24392), (1136, 18294), (1704, 12196), (2272, 9147), (3049, 6816), (3408, 6098)]