19961280

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:291

約数の個数: 168

約数和(自身を含む): 71323200

約数和(自身を除く): 51361920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 32, 36, 40, 45, 48, 58, 60, 64, 72, 80, 87, 90, 96, 116, 120, 144, 145, 160, 174, 180, 192, 232, 239, 240, 261, 288, 290, 320, 348, 360, 435, 464, 478, 480, 522, 576, 580, 696, 717, 720, 870, 928, 956, 960, 1044, 1160, 1195, 1305, 1392, 1434, 1440, 1740, 1856, 1912, 2088, 2151, 2320, 2390, 2610, 2784, 2868, 2880, 3480, 3585, 3824, 4176, 4302, 4640, 4780, 5220, 5568, 5736, 6931, 6960, 7170, 7648, 8352, 8604, 9280, 9560, 10440, 10755, 11472, 13862, 13920, 14340, 15296, 16704, 17208, 19120, 20793, 20880, 21510, 22944, 27724, 27840, 28680, 34416, 34655, 38240, 41586, 41760, 43020, 45888, 55448, 57360, 62379, 68832, 69310, 76480, 83172, 83520, 86040, 103965, 110896, 114720, 124758, 137664, 138620, 166344, 172080, 207930, 221792, 229440, 249516, 277240, 311895, 332688, 344160, 415860, 443584, 499032, 554480, 623790, 665376, 688320, 831720, 998064, 1108960, 1247580, 1330752, 1663440, 1996128, 2217920, 2495160, 3326880, 3992256, 4990320, 6653760, 9980640, 19961280]

約数ペア:

[(1, 19961280), (2, 9980640), (3, 6653760), (4, 4990320), (5, 3992256), (6, 3326880), (8, 2495160), (9, 2217920), (10, 1996128), (12, 1663440), (15, 1330752), (16, 1247580), (18, 1108960), (20, 998064), (24, 831720), (29, 688320), (30, 665376), (32, 623790), (36, 554480), (40, 499032), (45, 443584), (48, 415860), (58, 344160), (60, 332688), (64, 311895), (72, 277240), (80, 249516), (87, 229440), (90, 221792), (96, 207930), (116, 172080), (120, 166344), (144, 138620), (145, 137664), (160, 124758), (174, 114720), (180, 110896), (192, 103965), (232, 86040), (239, 83520), (240, 83172), (261, 76480), (288, 69310), (290, 68832), (320, 62379), (348, 57360), (360, 55448), (435, 45888), (464, 43020), (478, 41760), (480, 41586), (522, 38240), (576, 34655), (580, 34416), (696, 28680), (717, 27840), (720, 27724), (870, 22944), (928, 21510), (956, 20880), (960, 20793), (1044, 19120), (1160, 17208), (1195, 16704), (1305, 15296), (1392, 14340), (1434, 13920), (1440, 13862), (1740, 11472), (1856, 10755), (1912, 10440), (2088, 9560), (2151, 9280), (2320, 8604), (2390, 8352), (2610, 7648), (2784, 7170), (2868, 6960), (2880, 6931), (3480, 5736), (3585, 5568), (3824, 5220), (4176, 4780), (4302, 4640)]