20416140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1123}}^1$

素因数の和:1239

約数の個数: 72

約数和(自身を含む): 62597808

約数和(自身を除く): 42181668

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 101, 180, 202, 303, 404, 505, 606, 909, 1010, 1123, 1212, 1515, 1818, 2020, 2246, 3030, 3369, 3636, 4492, 4545, 5615, 6060, 6738, 9090, 10107, 11230, 13476, 16845, 18180, 20214, 22460, 33690, 40428, 50535, 67380, 101070, 113423, 202140, 226846, 340269, 453692, 567115, 680538, 1020807, 1134230, 1361076, 1701345, 2041614, 2268460, 3402690, 4083228, 5104035, 6805380, 10208070, 20416140]

約数ペア:

[(1, 20416140), (2, 10208070), (3, 6805380), (4, 5104035), (5, 4083228), (6, 3402690), (9, 2268460), (10, 2041614), (12, 1701345), (15, 1361076), (18, 1134230), (20, 1020807), (30, 680538), (36, 567115), (45, 453692), (60, 340269), (90, 226846), (101, 202140), (180, 113423), (202, 101070), (303, 67380), (404, 50535), (505, 40428), (606, 33690), (909, 22460), (1010, 20214), (1123, 18180), (1212, 16845), (1515, 13476), (1818, 11230), (2020, 10107), (2246, 9090), (3030, 6738), (3369, 6060), (3636, 5615), (4492, 4545)]