20778472

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{443}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 46992960

約数和(自身を除く): 26214488

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 41, 44, 52, 82, 88, 104, 143, 164, 286, 328, 443, 451, 533, 572, 886, 902, 1066, 1144, 1772, 1804, 2132, 3544, 3608, 4264, 4873, 5759, 5863, 9746, 11518, 11726, 18163, 19492, 23036, 23452, 36326, 38984, 46072, 46904, 63349, 72652, 126698, 145304, 199793, 236119, 253396, 399586, 472238, 506792, 799172, 944476, 1598344, 1888952, 2597309, 5194618, 10389236, 20778472]

約数ペア:

[(1, 20778472), (2, 10389236), (4, 5194618), (8, 2597309), (11, 1888952), (13, 1598344), (22, 944476), (26, 799172), (41, 506792), (44, 472238), (52, 399586), (82, 253396), (88, 236119), (104, 199793), (143, 145304), (164, 126698), (286, 72652), (328, 63349), (443, 46904), (451, 46072), (533, 38984), (572, 36326), (886, 23452), (902, 23036), (1066, 19492), (1144, 18163), (1772, 11726), (1804, 11518), (2132, 9746), (3544, 5863), (3608, 5759), (4264, 4873)]