20627229

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{431}}^1$

素因数の和:537

約数の個数: 32

約数和(自身を含む): 32845824

約数和(自身を除く): 12218595

約数列:

[1, 3, 7, 21, 43, 53, 129, 159, 301, 371, 431, 903, 1113, 1293, 2279, 3017, 6837, 9051, 15953, 18533, 22843, 47859, 55599, 68529, 129731, 159901, 389193, 479703, 982249, 2946747, 6875743, 20627229]

約数ペア:

[(1, 20627229), (3, 6875743), (7, 2946747), (21, 982249), (43, 479703), (53, 389193), (129, 159901), (159, 129731), (301, 68529), (371, 55599), (431, 47859), (903, 22843), (1113, 18533), (1293, 15953), (2279, 9051), (3017, 6837)]