81991936

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:447

約数の個数: 72

約数和(自身を含む): 179250624

約数和(自身を除く): 97258688

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 71, 104, 128, 142, 208, 256, 284, 347, 416, 568, 694, 832, 923, 1136, 1388, 1664, 1846, 2272, 2776, 3328, 3692, 4511, 4544, 5552, 7384, 9022, 9088, 11104, 14768, 18044, 18176, 22208, 24637, 29536, 36088, 44416, 49274, 59072, 72176, 88832, 98548, 118144, 144352, 197096, 236288, 288704, 320281, 394192, 577408, 640562, 788384, 1154816, 1281124, 1576768, 2562248, 3153536, 5124496, 6307072, 10248992, 20497984, 40995968, 81991936]

約数ペア:

[(1, 81991936), (2, 40995968), (4, 20497984), (8, 10248992), (13, 6307072), (16, 5124496), (26, 3153536), (32, 2562248), (52, 1576768), (64, 1281124), (71, 1154816), (104, 788384), (128, 640562), (142, 577408), (208, 394192), (256, 320281), (284, 288704), (347, 236288), (416, 197096), (568, 144352), (694, 118144), (832, 98548), (923, 88832), (1136, 72176), (1388, 59072), (1664, 49274), (1846, 44416), (2272, 36088), (2776, 29536), (3328, 24637), (3692, 22208), (4511, 18176), (4544, 18044), (5552, 14768), (7384, 11104), (9022, 9088)]