20449760

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5557}}^1$

素因数の和:5595

約数の個数: 48

約数和(自身を含む): 50422176

約数和(自身を除く): 29972416

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, 5557, 11114, 22228, 27785, 44456, 55570, 88912, 111140, 127811, 177824, 222280, 255622, 444560, 511244, 639055, 889120, 1022488, 1278110, 2044976, 2556220, 4089952, 5112440, 10224880, 20449760]

約数ペア:

[(1, 20449760), (2, 10224880), (4, 5112440), (5, 4089952), (8, 2556220), (10, 2044976), (16, 1278110), (20, 1022488), (23, 889120), (32, 639055), (40, 511244), (46, 444560), (80, 255622), (92, 222280), (115, 177824), (160, 127811), (184, 111140), (230, 88912), (368, 55570), (460, 44456), (736, 27785), (920, 22228), (1840, 11114), (3680, 5557)]