21175539

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{109}}^1$

素因数の和:188

約数の個数: 48

約数和(自身を含む): 36791040

約数和(自身を除く): 15615501

約数列:

[1, 3, 7, 11, 21, 29, 33, 77, 87, 109, 203, 231, 319, 327, 609, 763, 841, 957, 1199, 2233, 2289, 2523, 3161, 3597, 5887, 6699, 8393, 9251, 9483, 17661, 22127, 25179, 27753, 34771, 64757, 66381, 91669, 104313, 194271, 243397, 275007, 641683, 730191, 1008359, 1925049, 3025077, 7058513, 21175539]

約数ペア:

[(1, 21175539), (3, 7058513), (7, 3025077), (11, 1925049), (21, 1008359), (29, 730191), (33, 641683), (77, 275007), (87, 243397), (109, 194271), (203, 104313), (231, 91669), (319, 66381), (327, 64757), (609, 34771), (763, 27753), (841, 25179), (957, 22127), (1199, 17661), (2233, 9483), (2289, 9251), (2523, 8393), (3161, 6699), (3597, 5887)]