20126015

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:192

約数の個数: 48

約数和(自身を含む): 31026240

約数和(自身を除く): 10900225

約数列:

[1, 5, 7, 13, 35, 49, 65, 71, 89, 91, 245, 355, 445, 455, 497, 623, 637, 923, 1157, 2485, 3115, 3185, 3479, 4361, 4615, 5785, 6319, 6461, 8099, 17395, 21805, 31595, 32305, 40495, 44233, 45227, 56693, 82147, 221165, 226135, 283465, 309631, 410735, 575029, 1548155, 2875145, 4025203, 20126015]

約数ペア:

[(1, 20126015), (5, 4025203), (7, 2875145), (13, 1548155), (35, 575029), (49, 410735), (65, 309631), (71, 283465), (89, 226135), (91, 221165), (245, 82147), (355, 56693), (445, 45227), (455, 44233), (497, 40495), (623, 32305), (637, 31595), (923, 21805), (1157, 17395), (2485, 8099), (3115, 6461), (3185, 6319), (3479, 5785), (4361, 4615)]