20497984

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:443

約数の個数: 56

約数和(自身を含む): 44549568

約数和(自身を除く): 24051584

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 71, 104, 142, 208, 284, 347, 416, 568, 694, 832, 923, 1136, 1388, 1846, 2272, 2776, 3692, 4511, 4544, 5552, 7384, 9022, 11104, 14768, 18044, 22208, 24637, 29536, 36088, 49274, 59072, 72176, 98548, 144352, 197096, 288704, 320281, 394192, 640562, 788384, 1281124, 1576768, 2562248, 5124496, 10248992, 20497984]

約数ペア:

[(1, 20497984), (2, 10248992), (4, 5124496), (8, 2562248), (13, 1576768), (16, 1281124), (26, 788384), (32, 640562), (52, 394192), (64, 320281), (71, 288704), (104, 197096), (142, 144352), (208, 98548), (284, 72176), (347, 59072), (416, 49274), (568, 36088), (694, 29536), (832, 24637), (923, 22208), (1136, 18044), (1388, 14768), (1846, 11104), (2272, 9022), (2776, 7384), (3692, 5552), (4511, 4544)]