21139664

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14519}}^1$

素因数の和:14547

約数の個数: 40

約数和(自身を含む): 50413440

約数和(自身を除く): 29273776

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 14519, 29038, 58076, 101633, 116152, 188747, 203266, 232304, 377494, 406532, 754988, 813064, 1321229, 1509976, 1626128, 2642458, 3019952, 5284916, 10569832, 21139664]

約数ペア:

[(1, 21139664), (2, 10569832), (4, 5284916), (7, 3019952), (8, 2642458), (13, 1626128), (14, 1509976), (16, 1321229), (26, 813064), (28, 754988), (52, 406532), (56, 377494), (91, 232304), (104, 203266), (112, 188747), (182, 116152), (208, 101633), (364, 58076), (728, 29038), (1456, 14519)]