19655880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{233}}^1$

素因数の和:303

約数の個数: 128

約数和(自身を含む): 64022400

約数和(自身を除く): 44366520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 37, 38, 40, 57, 60, 74, 76, 95, 111, 114, 120, 148, 152, 185, 190, 222, 228, 233, 285, 296, 370, 380, 444, 456, 466, 555, 570, 699, 703, 740, 760, 888, 932, 1110, 1140, 1165, 1398, 1406, 1480, 1864, 2109, 2220, 2280, 2330, 2796, 2812, 3495, 3515, 4218, 4427, 4440, 4660, 5592, 5624, 6990, 7030, 8436, 8621, 8854, 9320, 10545, 13281, 13980, 14060, 16872, 17242, 17708, 21090, 22135, 25863, 26562, 27960, 28120, 34484, 35416, 42180, 43105, 44270, 51726, 53124, 66405, 68968, 84360, 86210, 88540, 103452, 106248, 129315, 132810, 163799, 172420, 177080, 206904, 258630, 265620, 327598, 344840, 491397, 517260, 531240, 655196, 818995, 982794, 1034520, 1310392, 1637990, 1965588, 2456985, 3275980, 3931176, 4913970, 6551960, 9827940, 19655880]

約数ペア:

[(1, 19655880), (2, 9827940), (3, 6551960), (4, 4913970), (5, 3931176), (6, 3275980), (8, 2456985), (10, 1965588), (12, 1637990), (15, 1310392), (19, 1034520), (20, 982794), (24, 818995), (30, 655196), (37, 531240), (38, 517260), (40, 491397), (57, 344840), (60, 327598), (74, 265620), (76, 258630), (95, 206904), (111, 177080), (114, 172420), (120, 163799), (148, 132810), (152, 129315), (185, 106248), (190, 103452), (222, 88540), (228, 86210), (233, 84360), (285, 68968), (296, 66405), (370, 53124), (380, 51726), (444, 44270), (456, 43105), (466, 42180), (555, 35416), (570, 34484), (699, 28120), (703, 27960), (740, 26562), (760, 25863), (888, 22135), (932, 21090), (1110, 17708), (1140, 17242), (1165, 16872), (1398, 14060), (1406, 13980), (1480, 13281), (1864, 10545), (2109, 9320), (2220, 8854), (2280, 8621), (2330, 8436), (2796, 7030), (2812, 6990), (3495, 5624), (3515, 5592), (4218, 4660), (4427, 4440)]