20618390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{797}}^1$

素因数の和:1016

約数の個数: 32

約数和(自身を含む): 40219200

約数和(自身を除く): 19600810

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 199, 398, 797, 995, 1594, 1990, 2587, 3985, 5174, 7970, 10361, 12935, 20722, 25870, 51805, 103610, 158603, 317206, 793015, 1586030, 2061839, 4123678, 10309195, 20618390]

約数ペア:

[(1, 20618390), (2, 10309195), (5, 4123678), (10, 2061839), (13, 1586030), (26, 793015), (65, 317206), (130, 158603), (199, 103610), (398, 51805), (797, 25870), (995, 20722), (1594, 12935), (1990, 10361), (2587, 7970), (3985, 5174)]