19880565

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1471}}^1$

素因数の和:1549

約数の個数: 32

約数和(自身を含む): 34338816

約数和(自身を除く): 14458251

約数列:

[1, 3, 5, 15, 17, 51, 53, 85, 159, 255, 265, 795, 901, 1471, 2703, 4413, 4505, 7355, 13515, 22065, 25007, 75021, 77963, 125035, 233889, 375105, 389815, 1169445, 1325371, 3976113, 6626855, 19880565]

約数ペア:

[(1, 19880565), (3, 6626855), (5, 3976113), (15, 1325371), (17, 1169445), (51, 389815), (53, 375105), (85, 233889), (159, 125035), (255, 77963), (265, 75021), (795, 25007), (901, 22065), (1471, 13515), (2703, 7355), (4413, 4505)]