20121664025

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{269}}^1\times {\mathrm{467}}^1$

素因数の和:938

約数の個数: 48

約数和(自身を含む): 25853256000

約数和(自身を除く): 5731591975

約数列:

[1, 5, 25, 43, 149, 215, 269, 467, 745, 1075, 1345, 2335, 3725, 6407, 6725, 11567, 11675, 20081, 32035, 40081, 57835, 69583, 100405, 125623, 160175, 200405, 289175, 347915, 502025, 628115, 1002025, 1723483, 1739575, 2992069, 3140575, 5401789, 8617415, 14960345, 18717827, 27008945, 43087075, 74801725, 93589135, 135044725, 467945675, 804866561, 4024332805, 20121664025]

約数ペア:

[(1, 20121664025), (5, 4024332805), (25, 804866561), (43, 467945675), (149, 135044725), (215, 93589135), (269, 74801725), (467, 43087075), (745, 27008945), (1075, 18717827), (1345, 14960345), (2335, 8617415), (3725, 5401789), (6407, 3140575), (6725, 2992069), (11567, 1739575), (11675, 1723483), (20081, 1002025), (32035, 628115), (40081, 502025), (57835, 347915), (69583, 289175), (100405, 200405), (125623, 160175)]