20619040

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{431}}^1$

素因数の和:482

約数の個数: 96

約数和(自身を含む): 54867456

約数和(自身を除く): 34248416

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 65, 80, 92, 104, 115, 130, 160, 184, 208, 230, 260, 299, 368, 416, 431, 460, 520, 598, 736, 862, 920, 1040, 1196, 1495, 1724, 1840, 2080, 2155, 2392, 2990, 3448, 3680, 4310, 4784, 5603, 5980, 6896, 8620, 9568, 9913, 11206, 11960, 13792, 17240, 19826, 22412, 23920, 28015, 34480, 39652, 44824, 47840, 49565, 56030, 68960, 79304, 89648, 99130, 112060, 128869, 158608, 179296, 198260, 224120, 257738, 317216, 396520, 448240, 515476, 644345, 793040, 896480, 1030952, 1288690, 1586080, 2061904, 2577380, 4123808, 5154760, 10309520, 20619040]

約数ペア:

[(1, 20619040), (2, 10309520), (4, 5154760), (5, 4123808), (8, 2577380), (10, 2061904), (13, 1586080), (16, 1288690), (20, 1030952), (23, 896480), (26, 793040), (32, 644345), (40, 515476), (46, 448240), (52, 396520), (65, 317216), (80, 257738), (92, 224120), (104, 198260), (115, 179296), (130, 158608), (160, 128869), (184, 112060), (208, 99130), (230, 89648), (260, 79304), (299, 68960), (368, 56030), (416, 49565), (431, 47840), (460, 44824), (520, 39652), (598, 34480), (736, 28015), (862, 23920), (920, 22412), (1040, 19826), (1196, 17240), (1495, 13792), (1724, 11960), (1840, 11206), (2080, 9913), (2155, 9568), (2392, 8620), (2990, 6896), (3448, 5980), (3680, 5603), (4310, 4784)]