1620781617

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1\times {\mathrm{337}}^1$

素因数の和:662

約数の個数: 64

約数和(自身を含む): 2713518080

約数和(自身を除く): 1092736463

約数列:

[1, 3, 7, 13, 21, 39, 79, 91, 223, 237, 273, 337, 553, 669, 1011, 1027, 1561, 1659, 2359, 2899, 3081, 4381, 4683, 7077, 7189, 8697, 13143, 17617, 20293, 21567, 26623, 30667, 52851, 60879, 75151, 79869, 92001, 123319, 186361, 225453, 229021, 346099, 369957, 526057, 559083, 687063, 976963, 1038297, 1578171, 1603147, 2422693, 2930889, 4809441, 5936929, 6838741, 7268079, 17810787, 20516223, 41558503, 77180077, 124675509, 231540231, 540260539, 1620781617]

約数ペア:

[(1, 1620781617), (3, 540260539), (7, 231540231), (13, 124675509), (21, 77180077), (39, 41558503), (79, 20516223), (91, 17810787), (223, 7268079), (237, 6838741), (273, 5936929), (337, 4809441), (553, 2930889), (669, 2422693), (1011, 1603147), (1027, 1578171), (1561, 1038297), (1659, 976963), (2359, 687063), (2899, 559083), (3081, 526057), (4381, 369957), (4683, 346099), (7077, 229021), (7189, 225453), (8697, 186361), (13143, 123319), (17617, 92001), (20293, 79869), (21567, 75151), (26623, 60879), (30667, 52851)]