18500220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1301}}^1$

素因数の和:1395

約数の個数: 72

約数和(自身を含む): 56871360

約数和(自身を除く): 38371140

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, 1301, 1422, 1580, 2370, 2602, 2844, 3555, 3903, 4740, 5204, 6505, 7110, 7806, 11709, 13010, 14220, 15612, 19515, 23418, 26020, 39030, 46836, 58545, 78060, 102779, 117090, 205558, 234180, 308337, 411116, 513895, 616674, 925011, 1027790, 1233348, 1541685, 1850022, 2055580, 3083370, 3700044, 4625055, 6166740, 9250110, 18500220]

約数ペア:

[(1, 18500220), (2, 9250110), (3, 6166740), (4, 4625055), (5, 3700044), (6, 3083370), (9, 2055580), (10, 1850022), (12, 1541685), (15, 1233348), (18, 1027790), (20, 925011), (30, 616674), (36, 513895), (45, 411116), (60, 308337), (79, 234180), (90, 205558), (158, 117090), (180, 102779), (237, 78060), (316, 58545), (395, 46836), (474, 39030), (711, 26020), (790, 23418), (948, 19515), (1185, 15612), (1301, 14220), (1422, 13010), (1580, 11709), (2370, 7806), (2602, 7110), (2844, 6505), (3555, 5204), (3903, 4740)]