20559520

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6763}}^1$

素因数の和:6797

約数の個数: 48

約数和(自身を含む): 51135840

約数和(自身を除く): 30576320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6763, 13526, 27052, 33815, 54104, 67630, 108208, 128497, 135260, 216416, 256994, 270520, 513988, 541040, 642485, 1027976, 1082080, 1284970, 2055952, 2569940, 4111904, 5139880, 10279760, 20559520]

約数ペア:

[(1, 20559520), (2, 10279760), (4, 5139880), (5, 4111904), (8, 2569940), (10, 2055952), (16, 1284970), (19, 1082080), (20, 1027976), (32, 642485), (38, 541040), (40, 513988), (76, 270520), (80, 256994), (95, 216416), (152, 135260), (160, 128497), (190, 108208), (304, 67630), (380, 54104), (608, 33815), (760, 27052), (1520, 13526), (3040, 6763)]