21348723921

素因数分解:

$3^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{409}}^1\times {\mathrm{8783}}^1$

素因数の和:9485

約数の個数: 32

約数和(自身を含む): 32729886720

約数和(自身を除く): 11381162799

約数列:

[1, 3, 7, 21, 283, 409, 849, 1227, 1981, 2863, 5943, 8589, 8783, 26349, 61481, 115747, 184443, 347241, 810229, 2430687, 2485589, 3592247, 7456767, 10776741, 17399123, 25145729, 52197369, 75437187, 1016605901, 3049817703, 7116241307, 21348723921]

約数ペア:

[(1, 21348723921), (3, 7116241307), (7, 3049817703), (21, 1016605901), (283, 75437187), (409, 52197369), (849, 25145729), (1227, 17399123), (1981, 10776741), (2863, 7456767), (5943, 3592247), (8589, 2485589), (8783, 2430687), (26349, 810229), (61481, 347241), (115747, 184443)]