21769760

素因数分解:

$2^5\times 5^1\times {\mathrm{359}}^1\times {\mathrm{379}}^1$

素因数の和:753

約数の個数: 48

約数和(自身を含む): 51710400

約数和(自身を除く): 29940640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 359, 379, 718, 758, 1436, 1516, 1795, 1895, 2872, 3032, 3590, 3790, 5744, 6064, 7180, 7580, 11488, 12128, 14360, 15160, 28720, 30320, 57440, 60640, 136061, 272122, 544244, 680305, 1088488, 1360610, 2176976, 2721220, 4353952, 5442440, 10884880, 21769760]

約数ペア:

[(1, 21769760), (2, 10884880), (4, 5442440), (5, 4353952), (8, 2721220), (10, 2176976), (16, 1360610), (20, 1088488), (32, 680305), (40, 544244), (80, 272122), (160, 136061), (359, 60640), (379, 57440), (718, 30320), (758, 28720), (1436, 15160), (1516, 14360), (1795, 12128), (1895, 11488), (2872, 7580), (3032, 7180), (3590, 6064), (3790, 5744)]