21290256

素因数分解:

$2^4\times 3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1$

素因数の和:270

約数の個数: 160

約数和(自身を含む): 69995520

約数和(自身を除く): 48705264

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 17, 18, 24, 26, 27, 34, 36, 39, 48, 51, 52, 54, 68, 72, 78, 102, 104, 108, 117, 136, 144, 153, 156, 204, 208, 216, 221, 223, 234, 272, 306, 312, 351, 408, 432, 442, 446, 459, 468, 612, 624, 663, 669, 702, 816, 884, 892, 918, 936, 1224, 1326, 1338, 1404, 1768, 1784, 1836, 1872, 1989, 2007, 2448, 2652, 2676, 2808, 2899, 3536, 3568, 3672, 3791, 3978, 4014, 5304, 5352, 5616, 5798, 5967, 6021, 7344, 7582, 7956, 8028, 8697, 10608, 10704, 11373, 11596, 11934, 12042, 15164, 15912, 16056, 17394, 22746, 23192, 23868, 24084, 26091, 30328, 31824, 32112, 34119, 34788, 45492, 46384, 47736, 48168, 49283, 52182, 60656, 68238, 69576, 78273, 90984, 95472, 96336, 98566, 102357, 104364, 136476, 139152, 147849, 156546, 181968, 197132, 204714, 208728, 272952, 295698, 313092, 394264, 409428, 417456, 443547, 545904, 591396, 626184, 788528, 818856, 887094, 1182792, 1252368, 1330641, 1637712, 1774188, 2365584, 2661282, 3548376, 5322564, 7096752, 10645128, 21290256]

約数ペア:

[(1, 21290256), (2, 10645128), (3, 7096752), (4, 5322564), (6, 3548376), (8, 2661282), (9, 2365584), (12, 1774188), (13, 1637712), (16, 1330641), (17, 1252368), (18, 1182792), (24, 887094), (26, 818856), (27, 788528), (34, 626184), (36, 591396), (39, 545904), (48, 443547), (51, 417456), (52, 409428), (54, 394264), (68, 313092), (72, 295698), (78, 272952), (102, 208728), (104, 204714), (108, 197132), (117, 181968), (136, 156546), (144, 147849), (153, 139152), (156, 136476), (204, 104364), (208, 102357), (216, 98566), (221, 96336), (223, 95472), (234, 90984), (272, 78273), (306, 69576), (312, 68238), (351, 60656), (408, 52182), (432, 49283), (442, 48168), (446, 47736), (459, 46384), (468, 45492), (612, 34788), (624, 34119), (663, 32112), (669, 31824), (702, 30328), (816, 26091), (884, 24084), (892, 23868), (918, 23192), (936, 22746), (1224, 17394), (1326, 16056), (1338, 15912), (1404, 15164), (1768, 12042), (1784, 11934), (1836, 11596), (1872, 11373), (1989, 10704), (2007, 10608), (2448, 8697), (2652, 8028), (2676, 7956), (2808, 7582), (2899, 7344), (3536, 6021), (3568, 5967), (3672, 5798), (3791, 5616), (3978, 5352), (4014, 5304)]