21006540

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12967}}^1$

素因数の和:12988

約数の個数: 60

約数和(自身を含む): 65903376

約数和(自身を除く): 44896836

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12967, 25934, 38901, 51868, 64835, 77802, 116703, 129670, 155604, 194505, 233406, 259340, 350109, 389010, 466812, 583515, 700218, 778020, 1050327, 1167030, 1400436, 1750545, 2100654, 2334060, 3501090, 4201308, 5251635, 7002180, 10503270, 21006540]

約数ペア:

[(1, 21006540), (2, 10503270), (3, 7002180), (4, 5251635), (5, 4201308), (6, 3501090), (9, 2334060), (10, 2100654), (12, 1750545), (15, 1400436), (18, 1167030), (20, 1050327), (27, 778020), (30, 700218), (36, 583515), (45, 466812), (54, 389010), (60, 350109), (81, 259340), (90, 233406), (108, 194505), (135, 155604), (162, 129670), (180, 116703), (270, 77802), (324, 64835), (405, 51868), (540, 38901), (810, 25934), (1620, 12967)]