7828240

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{1997}}^1$

素因数の和:2024

約数の個数: 60

約数和(自身を含む): 21182796

約数和(自身を除く): 13354556

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 1997, 3920, 3994, 7988, 9985, 13979, 15976, 19970, 27958, 31952, 39940, 55916, 69895, 79880, 97853, 111832, 139790, 159760, 195706, 223664, 279580, 391412, 489265, 559160, 782824, 978530, 1118320, 1565648, 1957060, 3914120, 7828240]

約数ペア:

[(1, 7828240), (2, 3914120), (4, 1957060), (5, 1565648), (7, 1118320), (8, 978530), (10, 782824), (14, 559160), (16, 489265), (20, 391412), (28, 279580), (35, 223664), (40, 195706), (49, 159760), (56, 139790), (70, 111832), (80, 97853), (98, 79880), (112, 69895), (140, 55916), (196, 39940), (245, 31952), (280, 27958), (392, 19970), (490, 15976), (560, 13979), (784, 9985), (980, 7988), (1960, 3994), (1997, 3920)]