20669715

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:505

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20802285

約数列:

[1, 3, 5, 9, 11, 15, 27, 31, 33, 45, 55, 93, 99, 135, 155, 165, 279, 297, 341, 449, 465, 495, 837, 1023, 1347, 1395, 1485, 1705, 2245, 3069, 4041, 4185, 4939, 5115, 6735, 9207, 12123, 13919, 14817, 15345, 20205, 24695, 41757, 44451, 46035, 60615, 69595, 74085, 125271, 133353, 153109, 208785, 222255, 375813, 459327, 626355, 666765, 765545, 1377981, 1879065, 2296635, 4133943, 6889905, 20669715]

約数ペア:

[(1, 20669715), (3, 6889905), (5, 4133943), (9, 2296635), (11, 1879065), (15, 1377981), (27, 765545), (31, 666765), (33, 626355), (45, 459327), (55, 375813), (93, 222255), (99, 208785), (135, 153109), (155, 133353), (165, 125271), (279, 74085), (297, 69595), (341, 60615), (449, 46035), (465, 44451), (495, 41757), (837, 24695), (1023, 20205), (1347, 15345), (1395, 14817), (1485, 13919), (1705, 12123), (2245, 9207), (3069, 6735), (4041, 5115), (4185, 4939)]