21085984

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{467}}^1$

素因数の和:577

約数の個数: 48

約数和(自身を含む): 44579808

約数和(自身を除く): 23493824

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 83, 136, 166, 272, 332, 467, 544, 664, 934, 1328, 1411, 1868, 2656, 2822, 3736, 5644, 7472, 7939, 11288, 14944, 15878, 22576, 31756, 38761, 45152, 63512, 77522, 127024, 155044, 254048, 310088, 620176, 658937, 1240352, 1317874, 2635748, 5271496, 10542992, 21085984]

約数ペア:

[(1, 21085984), (2, 10542992), (4, 5271496), (8, 2635748), (16, 1317874), (17, 1240352), (32, 658937), (34, 620176), (68, 310088), (83, 254048), (136, 155044), (166, 127024), (272, 77522), (332, 63512), (467, 45152), (544, 38761), (664, 31756), (934, 22576), (1328, 15878), (1411, 14944), (1868, 11288), (2656, 7939), (2822, 7472), (3736, 5644)]