213565715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1\times {\mathrm{521}}^1$

素因数の和:823

約数の個数: 32

約数和(自身を含む): 290900160

約数和(自身を除く): 77334445

約数列:

[1, 5, 11, 29, 55, 145, 257, 319, 521, 1285, 1595, 2605, 2827, 5731, 7453, 14135, 15109, 28655, 37265, 75545, 81983, 133897, 166199, 409915, 669485, 830995, 1472867, 3883013, 7364335, 19415065, 42713143, 213565715]

約数ペア:

[(1, 213565715), (5, 42713143), (11, 19415065), (29, 7364335), (55, 3883013), (145, 1472867), (257, 830995), (319, 669485), (521, 409915), (1285, 166199), (1595, 133897), (2605, 81983), (2827, 75545), (5731, 37265), (7453, 28655), (14135, 15109)]