19912857573

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{593}}^1\times {\mathrm{907}}^1$

素因数の和:1594

約数の個数: 64

約数和(自身を含む): 31895119872

約数和(自身を除く): 11982262299

約数列:

[1, 3, 7, 21, 41, 43, 123, 129, 287, 301, 593, 861, 903, 907, 1763, 1779, 2721, 4151, 5289, 6349, 12341, 12453, 19047, 24313, 25499, 37023, 37187, 39001, 72939, 76497, 111561, 117003, 170191, 178493, 260309, 273007, 510573, 535479, 537851, 780927, 819021, 1045459, 1599041, 1613553, 3136377, 3764957, 4797123, 7318213, 11193287, 11294871, 21954639, 22051891, 23127593, 33579861, 66155673, 69382779, 154363237, 161893151, 463089711, 485679453, 948231313, 2844693939, 6637619191, 19912857573]

約数ペア:

[(1, 19912857573), (3, 6637619191), (7, 2844693939), (21, 948231313), (41, 485679453), (43, 463089711), (123, 161893151), (129, 154363237), (287, 69382779), (301, 66155673), (593, 33579861), (861, 23127593), (903, 22051891), (907, 21954639), (1763, 11294871), (1779, 11193287), (2721, 7318213), (4151, 4797123), (5289, 3764957), (6349, 3136377), (12341, 1613553), (12453, 1599041), (19047, 1045459), (24313, 819021), (25499, 780927), (37023, 537851), (37187, 535479), (39001, 510573), (72939, 273007), (76497, 260309), (111561, 178493), (117003, 170191)]