39988520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6991}}^1$

素因数の和:7026

約数の個数: 64

約数和(自身を含む): 105719040

約数和(自身を除く): 65730520

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 5720, 6991, 13982, 27964, 34955, 55928, 69910, 76901, 90883, 139820, 153802, 181766, 279640, 307604, 363532, 384505, 454415, 615208, 727064, 769010, 908830, 999713, 1538020, 1817660, 1999426, 3076040, 3635320, 3998852, 4998565, 7997704, 9997130, 19994260, 39988520]

約数ペア:

[(1, 39988520), (2, 19994260), (4, 9997130), (5, 7997704), (8, 4998565), (10, 3998852), (11, 3635320), (13, 3076040), (20, 1999426), (22, 1817660), (26, 1538020), (40, 999713), (44, 908830), (52, 769010), (55, 727064), (65, 615208), (88, 454415), (104, 384505), (110, 363532), (130, 307604), (143, 279640), (220, 181766), (260, 153802), (286, 139820), (440, 90883), (520, 76901), (572, 69910), (715, 55928), (1144, 34955), (1430, 27964), (2860, 13982), (5720, 6991)]