18889325

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1$

素因数の和:91

約数の個数: 72

約数和(自身を含む): 31747968

約数和(自身を除く): 12858643

約数列:

[1, 5, 7, 13, 19, 23, 25, 35, 65, 91, 95, 115, 133, 161, 175, 247, 299, 325, 361, 437, 455, 475, 575, 665, 805, 1235, 1495, 1729, 1805, 2093, 2185, 2275, 2527, 3059, 3325, 4025, 4693, 5681, 6175, 7475, 8303, 8645, 9025, 10465, 10925, 12635, 15295, 23465, 28405, 32851, 39767, 41515, 43225, 52325, 58121, 63175, 76475, 107939, 117325, 142025, 164255, 198835, 207575, 290605, 539695, 755573, 821275, 994175, 1453025, 2698475, 3777865, 18889325]

約数ペア:

[(1, 18889325), (5, 3777865), (7, 2698475), (13, 1453025), (19, 994175), (23, 821275), (25, 755573), (35, 539695), (65, 290605), (91, 207575), (95, 198835), (115, 164255), (133, 142025), (161, 117325), (175, 107939), (247, 76475), (299, 63175), (325, 58121), (361, 52325), (437, 43225), (455, 41515), (475, 39767), (575, 32851), (665, 28405), (805, 23465), (1235, 15295), (1495, 12635), (1729, 10925), (1805, 10465), (2093, 9025), (2185, 8645), (2275, 8303), (2527, 7475), (3059, 6175), (3325, 5681), (4025, 4693)]