28405455

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:216

約数の個数: 64

約数和(自身を含む): 52297728

約数和(自身を除く): 23892273

約数列:

[1, 3, 5, 13, 15, 31, 37, 39, 65, 93, 111, 127, 155, 185, 195, 381, 403, 465, 481, 555, 635, 1147, 1209, 1443, 1651, 1905, 2015, 2405, 3441, 3937, 4699, 4953, 5735, 6045, 7215, 8255, 11811, 14097, 14911, 17205, 19685, 23495, 24765, 44733, 51181, 59055, 61087, 70485, 74555, 145669, 153543, 183261, 223665, 255905, 305435, 437007, 728345, 767715, 916305, 1893697, 2185035, 5681091, 9468485, 28405455]

約数ペア:

[(1, 28405455), (3, 9468485), (5, 5681091), (13, 2185035), (15, 1893697), (31, 916305), (37, 767715), (39, 728345), (65, 437007), (93, 305435), (111, 255905), (127, 223665), (155, 183261), (185, 153543), (195, 145669), (381, 74555), (403, 70485), (465, 61087), (481, 59055), (555, 51181), (635, 44733), (1147, 24765), (1209, 23495), (1443, 19685), (1651, 17205), (1905, 14911), (2015, 14097), (2405, 11811), (3441, 8255), (3937, 7215), (4699, 6045), (4953, 5735)]