21155784

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67807}}^1$

素因数の和:67829

約数の個数: 32

約数和(自身を含む): 56958720

約数和(自身を除く): 35802936

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 67807, 135614, 203421, 271228, 406842, 542456, 813684, 881491, 1627368, 1762982, 2644473, 3525964, 5288946, 7051928, 10577892, 21155784]

約数ペア:

[(1, 21155784), (2, 10577892), (3, 7051928), (4, 5288946), (6, 3525964), (8, 2644473), (12, 1762982), (13, 1627368), (24, 881491), (26, 813684), (39, 542456), (52, 406842), (78, 271228), (104, 203421), (156, 135614), (312, 67807)]