18692289

素因数分解:

$3^8\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1$

素因数の和:79

約数の個数: 72

約数和(自身を含む): 35899968

約数和(自身を除く): 17207679

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 37, 63, 77, 81, 99, 111, 189, 231, 243, 259, 297, 333, 407, 567, 693, 729, 777, 891, 999, 1221, 1701, 2079, 2187, 2331, 2673, 2849, 2997, 3663, 5103, 6237, 6561, 6993, 8019, 8547, 8991, 10989, 15309, 18711, 20979, 24057, 25641, 26973, 32967, 45927, 56133, 62937, 72171, 76923, 80919, 98901, 168399, 188811, 230769, 242757, 296703, 505197, 566433, 692307, 890109, 1699299, 2076921, 2670327, 6230763, 18692289]

約数ペア:

[(1, 18692289), (3, 6230763), (7, 2670327), (9, 2076921), (11, 1699299), (21, 890109), (27, 692307), (33, 566433), (37, 505197), (63, 296703), (77, 242757), (81, 230769), (99, 188811), (111, 168399), (189, 98901), (231, 80919), (243, 76923), (259, 72171), (297, 62937), (333, 56133), (407, 45927), (567, 32967), (693, 26973), (729, 25641), (777, 24057), (891, 20979), (999, 18711), (1221, 15309), (1701, 10989), (2079, 8991), (2187, 8547), (2331, 8019), (2673, 6993), (2849, 6561), (2997, 6237), (3663, 5103)]