81990558

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{20611}}^1$

素因数の和:20649

約数の個数: 48

約数和(自身を含む): 202574736

約数和(自身を除く): 120584178

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 20611, 41222, 61833, 123666, 185499, 267943, 350387, 370998, 535886, 700774, 803829, 1051161, 1607658, 2102322, 2411487, 3153483, 4555031, 4822974, 6306966, 9110062, 13665093, 27330186, 40995279, 81990558]

約数ペア:

[(1, 81990558), (2, 40995279), (3, 27330186), (6, 13665093), (9, 9110062), (13, 6306966), (17, 4822974), (18, 4555031), (26, 3153483), (34, 2411487), (39, 2102322), (51, 1607658), (78, 1051161), (102, 803829), (117, 700774), (153, 535886), (221, 370998), (234, 350387), (306, 267943), (442, 185499), (663, 123666), (1326, 61833), (1989, 41222), (3978, 20611)]