28017080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:253

約数の個数: 128

約数和(自身を含む): 79833600

約数和(自身を除く): 51816520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 43, 52, 56, 65, 70, 86, 91, 104, 130, 140, 172, 179, 182, 215, 260, 280, 301, 344, 358, 364, 430, 455, 520, 559, 602, 716, 728, 860, 895, 910, 1118, 1204, 1253, 1432, 1505, 1720, 1790, 1820, 2236, 2327, 2408, 2506, 2795, 3010, 3580, 3640, 3913, 4472, 4654, 5012, 5590, 6020, 6265, 7160, 7697, 7826, 9308, 10024, 11180, 11635, 12040, 12530, 15394, 15652, 16289, 18616, 19565, 22360, 23270, 25060, 30788, 31304, 32578, 38485, 39130, 46540, 50120, 53879, 61576, 65156, 76970, 78260, 81445, 93080, 100061, 107758, 130312, 153940, 156520, 162890, 200122, 215516, 269395, 307880, 325780, 400244, 431032, 500305, 538790, 651560, 700427, 800488, 1000610, 1077580, 1400854, 2001220, 2155160, 2801708, 3502135, 4002440, 5603416, 7004270, 14008540, 28017080]

約数ペア:

[(1, 28017080), (2, 14008540), (4, 7004270), (5, 5603416), (7, 4002440), (8, 3502135), (10, 2801708), (13, 2155160), (14, 2001220), (20, 1400854), (26, 1077580), (28, 1000610), (35, 800488), (40, 700427), (43, 651560), (52, 538790), (56, 500305), (65, 431032), (70, 400244), (86, 325780), (91, 307880), (104, 269395), (130, 215516), (140, 200122), (172, 162890), (179, 156520), (182, 153940), (215, 130312), (260, 107758), (280, 100061), (301, 93080), (344, 81445), (358, 78260), (364, 76970), (430, 65156), (455, 61576), (520, 53879), (559, 50120), (602, 46540), (716, 39130), (728, 38485), (860, 32578), (895, 31304), (910, 30788), (1118, 25060), (1204, 23270), (1253, 22360), (1432, 19565), (1505, 18616), (1720, 16289), (1790, 15652), (1820, 15394), (2236, 12530), (2327, 12040), (2408, 11635), (2506, 11180), (2795, 10024), (3010, 9308), (3580, 7826), (3640, 7697), (3913, 7160), (4472, 6265), (4654, 6020), (5012, 5590)]