21870540

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:520

約数の個数: 96

約数和(自身を含む): 68886720

約数和(自身を除く): 47016180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 101, 108, 135, 180, 202, 270, 303, 401, 404, 505, 540, 606, 802, 909, 1010, 1203, 1212, 1515, 1604, 1818, 2005, 2020, 2406, 2727, 3030, 3609, 3636, 4010, 4545, 4812, 5454, 6015, 6060, 7218, 8020, 9090, 10827, 10908, 12030, 13635, 14436, 18045, 18180, 21654, 24060, 27270, 36090, 40501, 43308, 54135, 54540, 72180, 81002, 108270, 121503, 162004, 202505, 216540, 243006, 364509, 405010, 486012, 607515, 729018, 810020, 1093527, 1215030, 1458036, 1822545, 2187054, 2430060, 3645090, 4374108, 5467635, 7290180, 10935270, 21870540]

約数ペア:

[(1, 21870540), (2, 10935270), (3, 7290180), (4, 5467635), (5, 4374108), (6, 3645090), (9, 2430060), (10, 2187054), (12, 1822545), (15, 1458036), (18, 1215030), (20, 1093527), (27, 810020), (30, 729018), (36, 607515), (45, 486012), (54, 405010), (60, 364509), (90, 243006), (101, 216540), (108, 202505), (135, 162004), (180, 121503), (202, 108270), (270, 81002), (303, 72180), (401, 54540), (404, 54135), (505, 43308), (540, 40501), (606, 36090), (802, 27270), (909, 24060), (1010, 21654), (1203, 18180), (1212, 18045), (1515, 14436), (1604, 13635), (1818, 12030), (2005, 10908), (2020, 10827), (2406, 9090), (2727, 8020), (3030, 7218), (3609, 6060), (3636, 6015), (4010, 5454), (4545, 4812)]