21146545

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 30666240

約数和(自身を除く): 9519695

約数列:

[1, 5, 7, 23, 35, 109, 115, 161, 241, 545, 763, 805, 1205, 1687, 2507, 3815, 5543, 8435, 12535, 17549, 26269, 27715, 38801, 87745, 131345, 183883, 194005, 604187, 919415, 3020935, 4229309, 21146545]

約数ペア:

[(1, 21146545), (5, 4229309), (7, 3020935), (23, 919415), (35, 604187), (109, 194005), (115, 183883), (161, 131345), (241, 87745), (545, 38801), (763, 27715), (805, 26269), (1205, 17549), (1687, 12535), (2507, 8435), (3815, 5543)]