30721145

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{269}}^1$

素因数の和:545

約数の個数: 32

約数和(自身を含む): 45722880

約数和(自身を除く): 15001735

約数列:

[1, 5, 7, 13, 35, 65, 91, 251, 269, 455, 1255, 1345, 1757, 1883, 3263, 3497, 8785, 9415, 16315, 17485, 22841, 24479, 67519, 114205, 122395, 337595, 472633, 877747, 2363165, 4388735, 6144229, 30721145]

約数ペア:

[(1, 30721145), (5, 6144229), (7, 4388735), (13, 2363165), (35, 877747), (65, 472633), (91, 337595), (251, 122395), (269, 114205), (455, 67519), (1255, 24479), (1345, 22841), (1757, 17485), (1883, 16315), (3263, 9415), (3497, 8785)]