19748520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4987}}^1$

素因数の和:5015

約数の個数: 96

約数和(自身を含む): 70031520

約数和(自身を除く): 50283000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 132, 165, 180, 198, 220, 264, 330, 360, 396, 440, 495, 660, 792, 990, 1320, 1980, 3960, 4987, 9974, 14961, 19948, 24935, 29922, 39896, 44883, 49870, 54857, 59844, 74805, 89766, 99740, 109714, 119688, 149610, 164571, 179532, 199480, 219428, 224415, 274285, 299220, 329142, 359064, 438856, 448830, 493713, 548570, 598440, 658284, 822855, 897660, 987426, 1097140, 1316568, 1645710, 1795320, 1974852, 2194280, 2468565, 3291420, 3949704, 4937130, 6582840, 9874260, 19748520]

約数ペア:

[(1, 19748520), (2, 9874260), (3, 6582840), (4, 4937130), (5, 3949704), (6, 3291420), (8, 2468565), (9, 2194280), (10, 1974852), (11, 1795320), (12, 1645710), (15, 1316568), (18, 1097140), (20, 987426), (22, 897660), (24, 822855), (30, 658284), (33, 598440), (36, 548570), (40, 493713), (44, 448830), (45, 438856), (55, 359064), (60, 329142), (66, 299220), (72, 274285), (88, 224415), (90, 219428), (99, 199480), (110, 179532), (120, 164571), (132, 149610), (165, 119688), (180, 109714), (198, 99740), (220, 89766), (264, 74805), (330, 59844), (360, 54857), (396, 49870), (440, 44883), (495, 39896), (660, 29922), (792, 24935), (990, 19948), (1320, 14961), (1980, 9974), (3960, 4987)]