81638505

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8209}}^1$

素因数の和:8250

約数の個数: 48

約数和(自身を含む): 161375760

約数和(自身を除く): 79737255

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1989, 3315, 8209, 9945, 24627, 41045, 73881, 106717, 123135, 139553, 320151, 369405, 418659, 533585, 697765, 960453, 1255977, 1600755, 1814189, 2093295, 4802265, 5442567, 6279885, 9070945, 16327701, 27212835, 81638505]

約数ペア:

[(1, 81638505), (3, 27212835), (5, 16327701), (9, 9070945), (13, 6279885), (15, 5442567), (17, 4802265), (39, 2093295), (45, 1814189), (51, 1600755), (65, 1255977), (85, 960453), (117, 697765), (153, 533585), (195, 418659), (221, 369405), (255, 320151), (585, 139553), (663, 123135), (765, 106717), (1105, 73881), (1989, 41045), (3315, 24627), (8209, 9945)]