20937920

素因数分解:

$2^6\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1109}}^1$

素因数の和:1185

約数の個数: 56

約数和(自身を含む): 50749200

約数和(自身を除く): 29811280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 160, 236, 295, 320, 472, 590, 944, 1109, 1180, 1888, 2218, 2360, 3776, 4436, 4720, 5545, 8872, 9440, 11090, 17744, 18880, 22180, 35488, 44360, 65431, 70976, 88720, 130862, 177440, 261724, 327155, 354880, 523448, 654310, 1046896, 1308620, 2093792, 2617240, 4187584, 5234480, 10468960, 20937920]

約数ペア:

[(1, 20937920), (2, 10468960), (4, 5234480), (5, 4187584), (8, 2617240), (10, 2093792), (16, 1308620), (20, 1046896), (32, 654310), (40, 523448), (59, 354880), (64, 327155), (80, 261724), (118, 177440), (160, 130862), (236, 88720), (295, 70976), (320, 65431), (472, 44360), (590, 35488), (944, 22180), (1109, 18880), (1180, 17744), (1888, 11090), (2218, 9440), (2360, 8872), (3776, 5545), (4436, 4720)]