291245346760

素因数分解:

$2^3\times 5^1\times {\mathrm{991}}^1\times {\mathrm{7347259}}^1$

素因数の和:7348261

約数の個数: 32

約数和(自身を含む): 655963372800

約数和(自身を除く): 364718026040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 991, 1982, 3964, 4955, 7928, 9910, 19820, 39640, 7347259, 14694518, 29389036, 36736295, 58778072, 73472590, 146945180, 293890360, 7281133669, 14562267338, 29124534676, 36405668345, 58249069352, 72811336690, 145622673380, 291245346760]

約数ペア:

[(1, 291245346760), (2, 145622673380), (4, 72811336690), (5, 58249069352), (8, 36405668345), (10, 29124534676), (20, 14562267338), (40, 7281133669), (991, 293890360), (1982, 146945180), (3964, 73472590), (4955, 58778072), (7928, 36736295), (9910, 29389036), (19820, 14694518), (39640, 7347259)]