18358020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1291}}^1$

素因数の和:1385

約数の個数: 72

約数和(自身を含む): 56434560

約数和(自身を除く): 38076540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 158, 180, 237, 316, 395, 474, 711, 790, 948, 1185, 1291, 1422, 1580, 2370, 2582, 2844, 3555, 3873, 4740, 5164, 6455, 7110, 7746, 11619, 12910, 14220, 15492, 19365, 23238, 25820, 38730, 46476, 58095, 77460, 101989, 116190, 203978, 232380, 305967, 407956, 509945, 611934, 917901, 1019890, 1223868, 1529835, 1835802, 2039780, 3059670, 3671604, 4589505, 6119340, 9179010, 18358020]

約数ペア:

[(1, 18358020), (2, 9179010), (3, 6119340), (4, 4589505), (5, 3671604), (6, 3059670), (9, 2039780), (10, 1835802), (12, 1529835), (15, 1223868), (18, 1019890), (20, 917901), (30, 611934), (36, 509945), (45, 407956), (60, 305967), (79, 232380), (90, 203978), (158, 116190), (180, 101989), (237, 77460), (316, 58095), (395, 46476), (474, 38730), (711, 25820), (790, 23238), (948, 19365), (1185, 15492), (1291, 14220), (1422, 12910), (1580, 11619), (2370, 7746), (2582, 7110), (2844, 6455), (3555, 5164), (3873, 4740)]