31118885

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:138

約数の個数: 64

約数和(自身を含む): 48660480

約数和(自身を除く): 17541595

約数列:

[1, 5, 7, 23, 29, 31, 35, 43, 115, 145, 155, 161, 203, 215, 217, 301, 667, 713, 805, 899, 989, 1015, 1085, 1247, 1333, 1505, 3335, 3565, 4495, 4669, 4945, 4991, 6235, 6293, 6665, 6923, 8729, 9331, 20677, 23345, 24955, 28681, 30659, 31465, 34615, 38657, 43645, 46655, 103385, 143405, 144739, 153295, 193285, 200767, 214613, 270599, 723695, 889111, 1003835, 1073065, 1352995, 4445555, 6223777, 31118885]

約数ペア:

[(1, 31118885), (5, 6223777), (7, 4445555), (23, 1352995), (29, 1073065), (31, 1003835), (35, 889111), (43, 723695), (115, 270599), (145, 214613), (155, 200767), (161, 193285), (203, 153295), (215, 144739), (217, 143405), (301, 103385), (667, 46655), (713, 43645), (805, 38657), (899, 34615), (989, 31465), (1015, 30659), (1085, 28681), (1247, 24955), (1333, 23345), (1505, 20677), (3335, 9331), (3565, 8729), (4495, 6923), (4669, 6665), (4945, 6293), (4991, 6235)]