21915460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156539}}^1$

素因数の和:156555

約数の個数: 24

約数和(自身を含む): 52597440

約数和(自身を除く): 30681980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156539, 313078, 626156, 782695, 1095773, 1565390, 2191546, 3130780, 4383092, 5478865, 10957730, 21915460]

約数ペア:

[(1, 21915460), (2, 10957730), (4, 5478865), (5, 4383092), (7, 3130780), (10, 2191546), (14, 1565390), (20, 1095773), (28, 782695), (35, 626156), (70, 313078), (140, 156539)]