21578193

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26347}}^1$

素因数の和:26373

約数の個数: 24

約数和(自身を含む): 38362688

約数和(自身を除く): 16784495

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26347, 79041, 184429, 237123, 342511, 553287, 1027533, 1659861, 2397577, 3082599, 7192731, 21578193]

約数ペア:

[(1, 21578193), (3, 7192731), (7, 3082599), (9, 2397577), (13, 1659861), (21, 1027533), (39, 553287), (63, 342511), (91, 237123), (117, 184429), (273, 79041), (819, 26347)]