39969020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21961}}^1$

素因数の和:21990

約数の個数: 48

約数和(自身を含む): 103309248

約数和(自身を除く): 63340228

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 21961, 43922, 87844, 109805, 153727, 219610, 285493, 307454, 439220, 570986, 614908, 768635, 1141972, 1427465, 1537270, 1998451, 2854930, 3074540, 3996902, 5709860, 7993804, 9992255, 19984510, 39969020]

約数ペア:

[(1, 39969020), (2, 19984510), (4, 9992255), (5, 7993804), (7, 5709860), (10, 3996902), (13, 3074540), (14, 2854930), (20, 1998451), (26, 1537270), (28, 1427465), (35, 1141972), (52, 768635), (65, 614908), (70, 570986), (91, 439220), (130, 307454), (140, 285493), (182, 219610), (260, 153727), (364, 109805), (455, 87844), (910, 43922), (1820, 21961)]