20329855

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{491}}^1$

素因数の和:536

約数の個数: 36

約数和(自身を含む): 30792312

約数和(自身を除く): 10462457

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 169, 245, 455, 491, 637, 845, 1183, 2455, 3185, 3437, 5915, 6383, 8281, 17185, 24059, 31915, 41405, 44681, 82979, 120295, 223405, 312767, 414895, 580853, 1563835, 2904265, 4065971, 20329855]

約数ペア:

[(1, 20329855), (5, 4065971), (7, 2904265), (13, 1563835), (35, 580853), (49, 414895), (65, 312767), (91, 223405), (169, 120295), (245, 82979), (455, 44681), (491, 41405), (637, 31915), (845, 24059), (1183, 17185), (2455, 8281), (3185, 6383), (3437, 5915)]