21558735

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{449}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 41277600

約数和(自身を除く): 19718865

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 97, 99, 165, 291, 449, 485, 495, 873, 1067, 1347, 1455, 2245, 3201, 4041, 4365, 4939, 5335, 6735, 9603, 14817, 16005, 20205, 24695, 43553, 44451, 48015, 74085, 130659, 217765, 222255, 391977, 479083, 653295, 1437249, 1959885, 2395415, 4311747, 7186245, 21558735]

約数ペア:

[(1, 21558735), (3, 7186245), (5, 4311747), (9, 2395415), (11, 1959885), (15, 1437249), (33, 653295), (45, 479083), (55, 391977), (97, 222255), (99, 217765), (165, 130659), (291, 74085), (449, 48015), (485, 44451), (495, 43553), (873, 24695), (1067, 20205), (1347, 16005), (1455, 14817), (2245, 9603), (3201, 6735), (4041, 5335), (4365, 4939)]