81612120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1061}}^1$

素因数の和:1716

約数の個数: 64

約数和(自身を含む): 245449440

約数和(自身を除く): 163837320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 641, 1061, 1282, 1923, 2122, 2564, 3183, 3205, 3846, 4244, 5128, 5305, 6366, 6410, 7692, 8488, 9615, 10610, 12732, 12820, 15384, 15915, 19230, 21220, 25464, 25640, 31830, 38460, 42440, 63660, 76920, 127320, 680101, 1360202, 2040303, 2720404, 3400505, 4080606, 5440808, 6801010, 8161212, 10201515, 13602020, 16322424, 20403030, 27204040, 40806060, 81612120]

約数ペア:

[(1, 81612120), (2, 40806060), (3, 27204040), (4, 20403030), (5, 16322424), (6, 13602020), (8, 10201515), (10, 8161212), (12, 6801010), (15, 5440808), (20, 4080606), (24, 3400505), (30, 2720404), (40, 2040303), (60, 1360202), (120, 680101), (641, 127320), (1061, 76920), (1282, 63660), (1923, 42440), (2122, 38460), (2564, 31830), (3183, 25640), (3205, 25464), (3846, 21220), (4244, 19230), (5128, 15915), (5305, 15384), (6366, 12820), (6410, 12732), (7692, 10610), (8488, 9615)]