21242078

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{257}}^1$

素因数の和:317

約数の個数: 48

約数和(自身を含む): 39919824

約数和(自身を除く): 18677746

約数列:

[1, 2, 11, 13, 17, 22, 26, 34, 143, 187, 221, 257, 286, 289, 374, 442, 514, 578, 2431, 2827, 3179, 3341, 3757, 4369, 4862, 5654, 6358, 6682, 7514, 8738, 36751, 41327, 48059, 56797, 73502, 74273, 82654, 96118, 113594, 148546, 624767, 817003, 965549, 1249534, 1634006, 1931098, 10621039, 21242078]

約数ペア:

[(1, 21242078), (2, 10621039), (11, 1931098), (13, 1634006), (17, 1249534), (22, 965549), (26, 817003), (34, 624767), (143, 148546), (187, 113594), (221, 96118), (257, 82654), (286, 74273), (289, 73502), (374, 56797), (442, 48059), (514, 41327), (578, 36751), (2431, 8738), (2827, 7514), (3179, 6682), (3341, 6358), (3757, 5654), (4369, 4862)]