20962880

素因数分解:

$2^6\times 5^1\times {\mathrm{109}}^1\times {\mathrm{601}}^1$

素因数の和:727

約数の個数: 56

約数和(自身を含む): 50459640

約数和(自身を除く): 29496760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 160, 218, 320, 436, 545, 601, 872, 1090, 1202, 1744, 2180, 2404, 3005, 3488, 4360, 4808, 6010, 6976, 8720, 9616, 12020, 17440, 19232, 24040, 34880, 38464, 48080, 65509, 96160, 131018, 192320, 262036, 327545, 524072, 655090, 1048144, 1310180, 2096288, 2620360, 4192576, 5240720, 10481440, 20962880]

約数ペア:

[(1, 20962880), (2, 10481440), (4, 5240720), (5, 4192576), (8, 2620360), (10, 2096288), (16, 1310180), (20, 1048144), (32, 655090), (40, 524072), (64, 327545), (80, 262036), (109, 192320), (160, 131018), (218, 96160), (320, 65509), (436, 48080), (545, 38464), (601, 34880), (872, 24040), (1090, 19232), (1202, 17440), (1744, 12020), (2180, 9616), (2404, 8720), (3005, 6976), (3488, 6010), (4360, 4808)]