20319260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2521}}^1$

素因数の和:2574

約数の個数: 48

約数和(自身を含む): 47453952

約数和(自身を除く): 27134692

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 2521, 4030, 5042, 8060, 10084, 12605, 25210, 32773, 50420, 65546, 78151, 131092, 156302, 163865, 312604, 327730, 390755, 655460, 781510, 1015963, 1563020, 2031926, 4063852, 5079815, 10159630, 20319260]

約数ペア:

[(1, 20319260), (2, 10159630), (4, 5079815), (5, 4063852), (10, 2031926), (13, 1563020), (20, 1015963), (26, 781510), (31, 655460), (52, 390755), (62, 327730), (65, 312604), (124, 163865), (130, 156302), (155, 131092), (260, 78151), (310, 65546), (403, 50420), (620, 32773), (806, 25210), (1612, 12605), (2015, 10084), (2521, 8060), (4030, 5042)]