31153815

素因数分解:

$3^7\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1$

素因数の和:81

約数の個数: 128

約数和(自身を含む): 71792640

約数和(自身を除く): 40638825

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 37, 45, 55, 63, 77, 81, 99, 105, 111, 135, 165, 185, 189, 231, 243, 259, 297, 315, 333, 385, 405, 407, 495, 555, 567, 693, 729, 777, 891, 945, 999, 1155, 1215, 1221, 1295, 1485, 1665, 1701, 2035, 2079, 2187, 2331, 2673, 2835, 2849, 2997, 3465, 3645, 3663, 3885, 4455, 4995, 5103, 6105, 6237, 6993, 8019, 8505, 8547, 8991, 10395, 10935, 10989, 11655, 13365, 14245, 14985, 15309, 18315, 18711, 20979, 24057, 25515, 25641, 26973, 31185, 32967, 34965, 40095, 42735, 44955, 54945, 56133, 62937, 76545, 76923, 80919, 93555, 98901, 104895, 120285, 128205, 134865, 164835, 168399, 188811, 230769, 280665, 296703, 314685, 384615, 404595, 494505, 566433, 692307, 841995, 890109, 944055, 1153845, 1483515, 2076921, 2832165, 3461535, 4450545, 6230763, 10384605, 31153815]

約数ペア:

[(1, 31153815), (3, 10384605), (5, 6230763), (7, 4450545), (9, 3461535), (11, 2832165), (15, 2076921), (21, 1483515), (27, 1153845), (33, 944055), (35, 890109), (37, 841995), (45, 692307), (55, 566433), (63, 494505), (77, 404595), (81, 384615), (99, 314685), (105, 296703), (111, 280665), (135, 230769), (165, 188811), (185, 168399), (189, 164835), (231, 134865), (243, 128205), (259, 120285), (297, 104895), (315, 98901), (333, 93555), (385, 80919), (405, 76923), (407, 76545), (495, 62937), (555, 56133), (567, 54945), (693, 44955), (729, 42735), (777, 40095), (891, 34965), (945, 32967), (999, 31185), (1155, 26973), (1215, 25641), (1221, 25515), (1295, 24057), (1485, 20979), (1665, 18711), (1701, 18315), (2035, 15309), (2079, 14985), (2187, 14245), (2331, 13365), (2673, 11655), (2835, 10989), (2849, 10935), (2997, 10395), (3465, 8991), (3645, 8547), (3663, 8505), (3885, 8019), (4455, 6993), (4995, 6237), (5103, 6105)]