215401815

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{5521}}^1$

素因数の和:5569

約数の個数: 48

約数和(自身を含む): 406860960

約数和(自身を除く): 191459145

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 289, 459, 765, 867, 1445, 2295, 2601, 4335, 5521, 7803, 13005, 16563, 27605, 39015, 49689, 82815, 93857, 149067, 248445, 281571, 469285, 745335, 844713, 1407855, 1595569, 2534139, 4223565, 4786707, 7977845, 12670695, 14360121, 23933535, 43080363, 71800605, 215401815]

約数ペア:

[(1, 215401815), (3, 71800605), (5, 43080363), (9, 23933535), (15, 14360121), (17, 12670695), (27, 7977845), (45, 4786707), (51, 4223565), (85, 2534139), (135, 1595569), (153, 1407855), (255, 844713), (289, 745335), (459, 469285), (765, 281571), (867, 248445), (1445, 149067), (2295, 93857), (2601, 82815), (4335, 49689), (5521, 39015), (7803, 27605), (13005, 16563)]