21907743

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{229}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 34621440

約数和(自身を除く): 12713697

約数列:

[1, 3, 11, 13, 33, 39, 143, 223, 229, 429, 669, 687, 2453, 2519, 2899, 2977, 7359, 7557, 8697, 8931, 31889, 32747, 51067, 95667, 98241, 153201, 561737, 663871, 1685211, 1991613, 7302581, 21907743]

約数ペア:

[(1, 21907743), (3, 7302581), (11, 1991613), (13, 1685211), (33, 663871), (39, 561737), (143, 153201), (223, 98241), (229, 95667), (429, 51067), (669, 32747), (687, 31889), (2453, 8931), (2519, 8697), (2899, 7557), (2977, 7359)]