28280280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:409

約数の個数: 128

約数和(自身を含む): 98081280

約数和(自身を除く): 69801000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 131, 140, 168, 210, 257, 262, 280, 393, 420, 514, 524, 655, 771, 786, 840, 917, 1028, 1048, 1285, 1310, 1542, 1572, 1799, 1834, 1965, 2056, 2570, 2620, 2751, 3084, 3144, 3598, 3668, 3855, 3930, 4585, 5140, 5240, 5397, 5502, 6168, 7196, 7336, 7710, 7860, 8995, 9170, 10280, 10794, 11004, 13755, 14392, 15420, 15720, 17990, 18340, 21588, 22008, 26985, 27510, 30840, 33667, 35980, 36680, 43176, 53970, 55020, 67334, 71960, 101001, 107940, 110040, 134668, 168335, 202002, 215880, 235669, 269336, 336670, 404004, 471338, 505005, 673340, 707007, 808008, 942676, 1010010, 1178345, 1346680, 1414014, 1885352, 2020020, 2356690, 2828028, 3535035, 4040040, 4713380, 5656056, 7070070, 9426760, 14140140, 28280280]

約数ペア:

[(1, 28280280), (2, 14140140), (3, 9426760), (4, 7070070), (5, 5656056), (6, 4713380), (7, 4040040), (8, 3535035), (10, 2828028), (12, 2356690), (14, 2020020), (15, 1885352), (20, 1414014), (21, 1346680), (24, 1178345), (28, 1010010), (30, 942676), (35, 808008), (40, 707007), (42, 673340), (56, 505005), (60, 471338), (70, 404004), (84, 336670), (105, 269336), (120, 235669), (131, 215880), (140, 202002), (168, 168335), (210, 134668), (257, 110040), (262, 107940), (280, 101001), (393, 71960), (420, 67334), (514, 55020), (524, 53970), (655, 43176), (771, 36680), (786, 35980), (840, 33667), (917, 30840), (1028, 27510), (1048, 26985), (1285, 22008), (1310, 21588), (1542, 18340), (1572, 17990), (1799, 15720), (1834, 15420), (1965, 14392), (2056, 13755), (2570, 11004), (2620, 10794), (2751, 10280), (3084, 9170), (3144, 8995), (3598, 7860), (3668, 7710), (3855, 7336), (3930, 7196), (4585, 6168), (5140, 5502), (5240, 5397)]