1981620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 6126120

約数和(自身を除く): 4144500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 101, 109, 180, 202, 218, 303, 327, 404, 436, 505, 545, 606, 654, 909, 981, 1010, 1090, 1212, 1308, 1515, 1635, 1818, 1962, 2020, 2180, 3030, 3270, 3636, 3924, 4545, 4905, 6060, 6540, 9090, 9810, 11009, 18180, 19620, 22018, 33027, 44036, 55045, 66054, 99081, 110090, 132108, 165135, 198162, 220180, 330270, 396324, 495405, 660540, 990810, 1981620]

約数ペア:

[(1, 1981620), (2, 990810), (3, 660540), (4, 495405), (5, 396324), (6, 330270), (9, 220180), (10, 198162), (12, 165135), (15, 132108), (18, 110090), (20, 99081), (30, 66054), (36, 55045), (45, 44036), (60, 33027), (90, 22018), (101, 19620), (109, 18180), (180, 11009), (202, 9810), (218, 9090), (303, 6540), (327, 6060), (404, 4905), (436, 4545), (505, 3924), (545, 3636), (606, 3270), (654, 3030), (909, 2180), (981, 2020), (1010, 1962), (1090, 1818), (1212, 1635), (1308, 1515)]