28156821

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{1583}}^1$

素因数の和:1622

約数の個数: 36

約数和(自身を含む): 48033216

約数和(自身を除く): 19876395

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 121, 147, 231, 363, 539, 847, 1583, 1617, 2541, 4749, 5929, 11081, 17413, 17787, 33243, 52239, 77567, 121891, 191543, 232701, 365673, 574629, 853237, 1340801, 2559711, 4022403, 9385607, 28156821]

約数ペア:

[(1, 28156821), (3, 9385607), (7, 4022403), (11, 2559711), (21, 1340801), (33, 853237), (49, 574629), (77, 365673), (121, 232701), (147, 191543), (231, 121891), (363, 77567), (539, 52239), (847, 33243), (1583, 17787), (1617, 17413), (2541, 11081), (4749, 5929)]