20546475

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{277}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 36402432

約数和(自身を除く): 15855957

約数列:

[1, 3, 5, 15, 23, 25, 43, 69, 75, 115, 129, 215, 277, 345, 575, 645, 831, 989, 1075, 1385, 1725, 2967, 3225, 4155, 4945, 6371, 6925, 11911, 14835, 19113, 20775, 24725, 31855, 35733, 59555, 74175, 95565, 159275, 178665, 273953, 297775, 477825, 821859, 893325, 1369765, 4109295, 6848825, 20546475]

約数ペア:

[(1, 20546475), (3, 6848825), (5, 4109295), (15, 1369765), (23, 893325), (25, 821859), (43, 477825), (69, 297775), (75, 273953), (115, 178665), (129, 159275), (215, 95565), (277, 74175), (345, 59555), (575, 35733), (645, 31855), (831, 24725), (989, 20775), (1075, 19113), (1385, 14835), (1725, 11911), (2967, 6925), (3225, 6371), (4155, 4945)]