407813720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{12479}}^1$

素因数の和:12552

約数の個数: 64

約数和(自身を含む): 988416000

約数和(自身を除く): 580602280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 860, 1634, 1720, 3268, 4085, 6536, 8170, 12479, 16340, 24958, 32680, 49916, 62395, 99832, 124790, 237101, 249580, 474202, 499160, 536597, 948404, 1073194, 1185505, 1896808, 2146388, 2371010, 2682985, 4292776, 4742020, 5365970, 9484040, 10195343, 10731940, 20390686, 21463880, 40781372, 50976715, 81562744, 101953430, 203906860, 407813720]

約数ペア:

[(1, 407813720), (2, 203906860), (4, 101953430), (5, 81562744), (8, 50976715), (10, 40781372), (19, 21463880), (20, 20390686), (38, 10731940), (40, 10195343), (43, 9484040), (76, 5365970), (86, 4742020), (95, 4292776), (152, 2682985), (172, 2371010), (190, 2146388), (215, 1896808), (344, 1185505), (380, 1073194), (430, 948404), (760, 536597), (817, 499160), (860, 474202), (1634, 249580), (1720, 237101), (3268, 124790), (4085, 99832), (6536, 62395), (8170, 49916), (12479, 32680), (16340, 24958)]