18718920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:220

約数の個数: 192

約数和(自身を含む): 69076800

約数和(自身を除く): 50357880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 29, 30, 33, 36, 40, 44, 45, 55, 58, 60, 66, 72, 87, 88, 90, 99, 110, 116, 120, 132, 145, 163, 165, 174, 180, 198, 220, 232, 261, 264, 290, 319, 326, 330, 348, 360, 396, 435, 440, 489, 495, 522, 580, 638, 652, 660, 696, 792, 815, 870, 957, 978, 990, 1044, 1160, 1276, 1304, 1305, 1320, 1467, 1595, 1630, 1740, 1793, 1914, 1956, 1980, 2088, 2445, 2552, 2610, 2871, 2934, 3190, 3260, 3480, 3586, 3828, 3912, 3960, 4727, 4785, 4890, 5220, 5379, 5742, 5868, 6380, 6520, 7172, 7335, 7656, 8965, 9454, 9570, 9780, 10440, 10758, 11484, 11736, 12760, 14181, 14344, 14355, 14670, 16137, 17930, 18908, 19140, 19560, 21516, 22968, 23635, 26895, 28362, 28710, 29340, 32274, 35860, 37816, 38280, 42543, 43032, 47270, 51997, 53790, 56724, 57420, 58680, 64548, 70905, 71720, 80685, 85086, 94540, 103994, 107580, 113448, 114840, 129096, 141810, 155991, 161370, 170172, 189080, 207988, 212715, 215160, 259985, 283620, 311982, 322740, 340344, 415976, 425430, 467973, 519970, 567240, 623964, 645480, 779955, 850860, 935946, 1039940, 1247928, 1559910, 1701720, 1871892, 2079880, 2339865, 3119820, 3743784, 4679730, 6239640, 9359460, 18718920]

約数ペア:

[(1, 18718920), (2, 9359460), (3, 6239640), (4, 4679730), (5, 3743784), (6, 3119820), (8, 2339865), (9, 2079880), (10, 1871892), (11, 1701720), (12, 1559910), (15, 1247928), (18, 1039940), (20, 935946), (22, 850860), (24, 779955), (29, 645480), (30, 623964), (33, 567240), (36, 519970), (40, 467973), (44, 425430), (45, 415976), (55, 340344), (58, 322740), (60, 311982), (66, 283620), (72, 259985), (87, 215160), (88, 212715), (90, 207988), (99, 189080), (110, 170172), (116, 161370), (120, 155991), (132, 141810), (145, 129096), (163, 114840), (165, 113448), (174, 107580), (180, 103994), (198, 94540), (220, 85086), (232, 80685), (261, 71720), (264, 70905), (290, 64548), (319, 58680), (326, 57420), (330, 56724), (348, 53790), (360, 51997), (396, 47270), (435, 43032), (440, 42543), (489, 38280), (495, 37816), (522, 35860), (580, 32274), (638, 29340), (652, 28710), (660, 28362), (696, 26895), (792, 23635), (815, 22968), (870, 21516), (957, 19560), (978, 19140), (990, 18908), (1044, 17930), (1160, 16137), (1276, 14670), (1304, 14355), (1305, 14344), (1320, 14181), (1467, 12760), (1595, 11736), (1630, 11484), (1740, 10758), (1793, 10440), (1914, 9780), (1956, 9570), (1980, 9454), (2088, 8965), (2445, 7656), (2552, 7335), (2610, 7172), (2871, 6520), (2934, 6380), (3190, 5868), (3260, 5742), (3480, 5379), (3586, 5220), (3828, 4890), (3912, 4785), (3960, 4727)]