201219921

素因数分解:

$3^2\times 7^3\times {\mathrm{65183}}^1$

素因数の和:65210

約数の個数: 24

約数和(自身を含む): 338956800

約数和(自身を除く): 137736879

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 65183, 195549, 456281, 586647, 1368843, 3193967, 4106529, 9581901, 22357769, 28745703, 67073307, 201219921]

約数ペア:

[(1, 201219921), (3, 67073307), (7, 28745703), (9, 22357769), (21, 9581901), (49, 4106529), (63, 3193967), (147, 1368843), (343, 586647), (441, 456281), (1029, 195549), (3087, 65183)]