20508640

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5573}}^1$

素因数の和:5611

約数の個数: 48

約数和(自身を含む): 50567328

約数和(自身を除く): 30058688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 5573, 11146, 22292, 27865, 44584, 55730, 89168, 111460, 128179, 178336, 222920, 256358, 445840, 512716, 640895, 891680, 1025432, 1281790, 2050864, 2563580, 4101728, 5127160, 10254320, 20508640]

約数ペア:

[(1, 20508640), (2, 10254320), (4, 5127160), (5, 4101728), (8, 2563580), (10, 2050864), (16, 1281790), (20, 1025432), (23, 891680), (32, 640895), (40, 512716), (46, 445840), (80, 256358), (92, 222920), (115, 178336), (160, 128179), (184, 111460), (230, 89168), (368, 55730), (460, 44584), (736, 27865), (920, 22292), (1840, 11146), (3680, 5573)]