28735280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{97}}^1$

素因数の和:163

約数の個数: 120

約数和(自身を含む): 80640672

約数和(自身を除く): 51905392

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 97, 112, 115, 140, 161, 184, 194, 230, 280, 322, 368, 388, 460, 485, 529, 560, 644, 679, 776, 805, 920, 970, 1058, 1288, 1358, 1552, 1610, 1840, 1940, 2116, 2231, 2576, 2645, 2716, 3220, 3395, 3703, 3880, 4232, 4462, 5290, 5432, 6440, 6790, 7406, 7760, 8464, 8924, 10580, 10864, 11155, 12880, 13580, 14812, 15617, 17848, 18515, 21160, 22310, 27160, 29624, 31234, 35696, 37030, 42320, 44620, 51313, 54320, 59248, 62468, 74060, 78085, 89240, 102626, 124936, 148120, 156170, 178480, 205252, 249872, 256565, 296240, 312340, 359191, 410504, 513130, 624680, 718382, 821008, 1026260, 1249360, 1436764, 1795955, 2052520, 2873528, 3591910, 4105040, 5747056, 7183820, 14367640, 28735280]

約数ペア:

[(1, 28735280), (2, 14367640), (4, 7183820), (5, 5747056), (7, 4105040), (8, 3591910), (10, 2873528), (14, 2052520), (16, 1795955), (20, 1436764), (23, 1249360), (28, 1026260), (35, 821008), (40, 718382), (46, 624680), (56, 513130), (70, 410504), (80, 359191), (92, 312340), (97, 296240), (112, 256565), (115, 249872), (140, 205252), (161, 178480), (184, 156170), (194, 148120), (230, 124936), (280, 102626), (322, 89240), (368, 78085), (388, 74060), (460, 62468), (485, 59248), (529, 54320), (560, 51313), (644, 44620), (679, 42320), (776, 37030), (805, 35696), (920, 31234), (970, 29624), (1058, 27160), (1288, 22310), (1358, 21160), (1552, 18515), (1610, 17848), (1840, 15617), (1940, 14812), (2116, 13580), (2231, 12880), (2576, 11155), (2645, 10864), (2716, 10580), (3220, 8924), (3395, 8464), (3703, 7760), (3880, 7406), (4232, 6790), (4462, 6440), (5290, 5432)]