21455360

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1$

素因数の和:86

約数の個数: 120

約数和(自身を含む): 56530980

約数和(自身を除く): 35075620

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 32, 34, 40, 58, 64, 68, 80, 85, 116, 128, 136, 145, 160, 170, 232, 256, 272, 289, 290, 320, 340, 464, 493, 512, 544, 578, 580, 640, 680, 928, 986, 1088, 1156, 1160, 1280, 1360, 1445, 1856, 1972, 2176, 2312, 2320, 2465, 2560, 2720, 2890, 3712, 3944, 4352, 4624, 4640, 4930, 5440, 5780, 7424, 7888, 8381, 8704, 9248, 9280, 9860, 10880, 11560, 14848, 15776, 16762, 18496, 18560, 19720, 21760, 23120, 31552, 33524, 36992, 37120, 39440, 41905, 43520, 46240, 63104, 67048, 73984, 74240, 78880, 83810, 92480, 126208, 134096, 147968, 157760, 167620, 184960, 252416, 268192, 315520, 335240, 369920, 536384, 631040, 670480, 739840, 1072768, 1262080, 1340960, 2145536, 2681920, 4291072, 5363840, 10727680, 21455360]

約数ペア:

[(1, 21455360), (2, 10727680), (4, 5363840), (5, 4291072), (8, 2681920), (10, 2145536), (16, 1340960), (17, 1262080), (20, 1072768), (29, 739840), (32, 670480), (34, 631040), (40, 536384), (58, 369920), (64, 335240), (68, 315520), (80, 268192), (85, 252416), (116, 184960), (128, 167620), (136, 157760), (145, 147968), (160, 134096), (170, 126208), (232, 92480), (256, 83810), (272, 78880), (289, 74240), (290, 73984), (320, 67048), (340, 63104), (464, 46240), (493, 43520), (512, 41905), (544, 39440), (578, 37120), (580, 36992), (640, 33524), (680, 31552), (928, 23120), (986, 21760), (1088, 19720), (1156, 18560), (1160, 18496), (1280, 16762), (1360, 15776), (1445, 14848), (1856, 11560), (1972, 10880), (2176, 9860), (2312, 9280), (2320, 9248), (2465, 8704), (2560, 8381), (2720, 7888), (2890, 7424), (3712, 5780), (3944, 5440), (4352, 4930), (4624, 4640)]