21035105

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{557}}^1$

素因数の和:665

約数の個数: 32

約数和(自身を含む): 31497984

約数和(自身を除く): 10462879

約数列:

[1, 5, 7, 13, 35, 65, 83, 91, 415, 455, 557, 581, 1079, 2785, 2905, 3899, 5395, 7241, 7553, 19495, 36205, 37765, 46231, 50687, 231155, 253435, 323617, 601003, 1618085, 3005015, 4207021, 21035105]

約数ペア:

[(1, 21035105), (5, 4207021), (7, 3005015), (13, 1618085), (35, 601003), (65, 323617), (83, 253435), (91, 231155), (415, 50687), (455, 46231), (557, 37765), (581, 36205), (1079, 19495), (2785, 7553), (2905, 7241), (3899, 5395)]