20638240

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18427}}^1$

素因数の和:18449

約数の個数: 48

約数和(自身を含む): 55726272

約数和(自身を除く): 35088032

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18427, 36854, 73708, 92135, 128989, 147416, 184270, 257978, 294832, 368540, 515956, 589664, 644945, 737080, 1031912, 1289890, 1474160, 2063824, 2579780, 2948320, 4127648, 5159560, 10319120, 20638240]

約数ペア:

[(1, 20638240), (2, 10319120), (4, 5159560), (5, 4127648), (7, 2948320), (8, 2579780), (10, 2063824), (14, 1474160), (16, 1289890), (20, 1031912), (28, 737080), (32, 644945), (35, 589664), (40, 515956), (56, 368540), (70, 294832), (80, 257978), (112, 184270), (140, 147416), (160, 128989), (224, 92135), (280, 73708), (560, 36854), (1120, 18427)]