21176960

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:218

約数の個数: 128

約数和(自身を含む): 60220800

約数和(自身を除く): 39043840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 64, 70, 80, 112, 116, 128, 140, 145, 160, 163, 203, 224, 232, 280, 290, 320, 326, 406, 448, 464, 560, 580, 640, 652, 812, 815, 896, 928, 1015, 1120, 1141, 1160, 1304, 1624, 1630, 1856, 2030, 2240, 2282, 2320, 2608, 3248, 3260, 3712, 4060, 4480, 4564, 4640, 4727, 5216, 5705, 6496, 6520, 8120, 9128, 9280, 9454, 10432, 11410, 12992, 13040, 16240, 18256, 18560, 18908, 20864, 22820, 23635, 25984, 26080, 32480, 33089, 36512, 37816, 45640, 47270, 52160, 64960, 66178, 73024, 75632, 91280, 94540, 104320, 129920, 132356, 146048, 151264, 165445, 182560, 189080, 264712, 302528, 330890, 365120, 378160, 529424, 605056, 661780, 730240, 756320, 1058848, 1323560, 1512640, 2117696, 2647120, 3025280, 4235392, 5294240, 10588480, 21176960]

約数ペア:

[(1, 21176960), (2, 10588480), (4, 5294240), (5, 4235392), (7, 3025280), (8, 2647120), (10, 2117696), (14, 1512640), (16, 1323560), (20, 1058848), (28, 756320), (29, 730240), (32, 661780), (35, 605056), (40, 529424), (56, 378160), (58, 365120), (64, 330890), (70, 302528), (80, 264712), (112, 189080), (116, 182560), (128, 165445), (140, 151264), (145, 146048), (160, 132356), (163, 129920), (203, 104320), (224, 94540), (232, 91280), (280, 75632), (290, 73024), (320, 66178), (326, 64960), (406, 52160), (448, 47270), (464, 45640), (560, 37816), (580, 36512), (640, 33089), (652, 32480), (812, 26080), (815, 25984), (896, 23635), (928, 22820), (1015, 20864), (1120, 18908), (1141, 18560), (1160, 18256), (1304, 16240), (1624, 13040), (1630, 12992), (1856, 11410), (2030, 10432), (2240, 9454), (2282, 9280), (2320, 9128), (2608, 8120), (3248, 6520), (3260, 6496), (3712, 5705), (4060, 5216), (4480, 4727), (4564, 4640)]