21081528

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{223}}^1$

素因数の和:349

約数の個数: 96

約数和(自身を含む): 62375040

約数和(自身を除く): 41293512

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 101, 104, 117, 156, 202, 223, 234, 303, 312, 404, 446, 468, 606, 669, 808, 892, 909, 936, 1212, 1313, 1338, 1784, 1818, 2007, 2424, 2626, 2676, 2899, 3636, 3939, 4014, 5252, 5352, 5798, 7272, 7878, 8028, 8697, 10504, 11596, 11817, 15756, 16056, 17394, 22523, 23192, 23634, 26091, 31512, 34788, 45046, 47268, 52182, 67569, 69576, 90092, 94536, 104364, 135138, 180184, 202707, 208728, 270276, 292799, 405414, 540552, 585598, 810828, 878397, 1171196, 1621656, 1756794, 2342392, 2635191, 3513588, 5270382, 7027176, 10540764, 21081528]

約数ペア:

[(1, 21081528), (2, 10540764), (3, 7027176), (4, 5270382), (6, 3513588), (8, 2635191), (9, 2342392), (12, 1756794), (13, 1621656), (18, 1171196), (24, 878397), (26, 810828), (36, 585598), (39, 540552), (52, 405414), (72, 292799), (78, 270276), (101, 208728), (104, 202707), (117, 180184), (156, 135138), (202, 104364), (223, 94536), (234, 90092), (303, 69576), (312, 67569), (404, 52182), (446, 47268), (468, 45046), (606, 34788), (669, 31512), (808, 26091), (892, 23634), (909, 23192), (936, 22523), (1212, 17394), (1313, 16056), (1338, 15756), (1784, 11817), (1818, 11596), (2007, 10504), (2424, 8697), (2626, 8028), (2676, 7878), (2899, 7272), (3636, 5798), (3939, 5352), (4014, 5252)]