21147235

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{373}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 29082240

約数和(自身を除く): 7935005

約数列:

[1, 5, 17, 23, 29, 85, 115, 145, 373, 391, 493, 667, 1865, 1955, 2465, 3335, 6341, 8579, 10817, 11339, 31705, 42895, 54085, 56695, 145843, 183889, 248791, 729215, 919445, 1243955, 4229447, 21147235]

約数ペア:

[(1, 21147235), (5, 4229447), (17, 1243955), (23, 919445), (29, 729215), (85, 248791), (115, 183889), (145, 145843), (373, 56695), (391, 54085), (493, 42895), (667, 31705), (1865, 11339), (1955, 10817), (2465, 8579), (3335, 6341)]