80381520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{111641}}^1$

素因数の和:111660

約数の個数: 60

約数和(自身を含む): 269950356

約数和(自身を除く): 189568836

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 111641, 223282, 334923, 446564, 558205, 669846, 893128, 1004769, 1116410, 1339692, 1674615, 1786256, 2009538, 2232820, 2679384, 3349230, 4019076, 4465640, 5023845, 5358768, 6698460, 8038152, 8931280, 10047690, 13396920, 16076304, 20095380, 26793840, 40190760, 80381520]

約数ペア:

[(1, 80381520), (2, 40190760), (3, 26793840), (4, 20095380), (5, 16076304), (6, 13396920), (8, 10047690), (9, 8931280), (10, 8038152), (12, 6698460), (15, 5358768), (16, 5023845), (18, 4465640), (20, 4019076), (24, 3349230), (30, 2679384), (36, 2232820), (40, 2009538), (45, 1786256), (48, 1674615), (60, 1339692), (72, 1116410), (80, 1004769), (90, 893128), (120, 669846), (144, 558205), (180, 446564), (240, 334923), (360, 223282), (720, 111641)]