21912370

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{389}}^1$

素因数の和:570

約数の個数: 32

約数和(自身を含む): 40772160

約数和(自身を除く): 18859790

約数列:

[1, 2, 5, 10, 43, 86, 131, 215, 262, 389, 430, 655, 778, 1310, 1945, 3890, 5633, 11266, 16727, 28165, 33454, 50959, 56330, 83635, 101918, 167270, 254795, 509590, 2191237, 4382474, 10956185, 21912370]

約数ペア:

[(1, 21912370), (2, 10956185), (5, 4382474), (10, 2191237), (43, 509590), (86, 254795), (131, 167270), (215, 101918), (262, 83635), (389, 56330), (430, 50959), (655, 33454), (778, 28165), (1310, 16727), (1945, 11266), (3890, 5633)]