18888520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{419}}^1$

素因数の和:467

約数の個数: 96

約数和(自身を含む): 51710400

約数和(自身を除く): 32821880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 49, 56, 70, 92, 98, 115, 140, 161, 184, 196, 230, 245, 280, 322, 392, 419, 460, 490, 644, 805, 838, 920, 980, 1127, 1288, 1610, 1676, 1960, 2095, 2254, 2933, 3220, 3352, 4190, 4508, 5635, 5866, 6440, 8380, 9016, 9637, 11270, 11732, 14665, 16760, 19274, 20531, 22540, 23464, 29330, 38548, 41062, 45080, 48185, 58660, 67459, 77096, 82124, 96370, 102655, 117320, 134918, 164248, 192740, 205310, 269836, 337295, 385480, 410620, 472213, 539672, 674590, 821240, 944426, 1349180, 1888852, 2361065, 2698360, 3777704, 4722130, 9444260, 18888520]

約数ペア:

[(1, 18888520), (2, 9444260), (4, 4722130), (5, 3777704), (7, 2698360), (8, 2361065), (10, 1888852), (14, 1349180), (20, 944426), (23, 821240), (28, 674590), (35, 539672), (40, 472213), (46, 410620), (49, 385480), (56, 337295), (70, 269836), (92, 205310), (98, 192740), (115, 164248), (140, 134918), (161, 117320), (184, 102655), (196, 96370), (230, 82124), (245, 77096), (280, 67459), (322, 58660), (392, 48185), (419, 45080), (460, 41062), (490, 38548), (644, 29330), (805, 23464), (838, 22540), (920, 20531), (980, 19274), (1127, 16760), (1288, 14665), (1610, 11732), (1676, 11270), (1960, 9637), (2095, 9016), (2254, 8380), (2933, 6440), (3220, 5866), (3352, 5635), (4190, 4508)]