989484040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{25741}}^1$

素因数の和:25814

約数の個数: 48

約数和(自身を含む): 2300562540

約数和(自身を除く): 1311078500

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 961, 1240, 1922, 3844, 4805, 7688, 9610, 19220, 25741, 38440, 51482, 102964, 128705, 205928, 257410, 514820, 797971, 1029640, 1595942, 3191884, 3989855, 6383768, 7979710, 15959420, 24737101, 31918840, 49474202, 98948404, 123685505, 197896808, 247371010, 494742020, 989484040]

約数ペア:

[(1, 989484040), (2, 494742020), (4, 247371010), (5, 197896808), (8, 123685505), (10, 98948404), (20, 49474202), (31, 31918840), (40, 24737101), (62, 15959420), (124, 7979710), (155, 6383768), (248, 3989855), (310, 3191884), (620, 1595942), (961, 1029640), (1240, 797971), (1922, 514820), (3844, 257410), (4805, 205928), (7688, 128705), (9610, 102964), (19220, 51482), (25741, 38440)]