21692528

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{499}}^1$

素因数の和:550

約数の個数: 80

約数和(自身を含む): 52080000

約数和(自身を除く): 30387472

約数列:

[1, 2, 4, 8, 11, 13, 16, 19, 22, 26, 38, 44, 52, 76, 88, 104, 143, 152, 176, 208, 209, 247, 286, 304, 418, 494, 499, 572, 836, 988, 998, 1144, 1672, 1976, 1996, 2288, 2717, 3344, 3952, 3992, 5434, 5489, 6487, 7984, 9481, 10868, 10978, 12974, 18962, 21736, 21956, 25948, 37924, 43472, 43912, 51896, 71357, 75848, 87824, 103792, 104291, 123253, 142714, 151696, 208582, 246506, 285428, 417164, 493012, 570856, 834328, 986024, 1141712, 1355783, 1668656, 1972048, 2711566, 5423132, 10846264, 21692528]

約数ペア:

[(1, 21692528), (2, 10846264), (4, 5423132), (8, 2711566), (11, 1972048), (13, 1668656), (16, 1355783), (19, 1141712), (22, 986024), (26, 834328), (38, 570856), (44, 493012), (52, 417164), (76, 285428), (88, 246506), (104, 208582), (143, 151696), (152, 142714), (176, 123253), (208, 104291), (209, 103792), (247, 87824), (286, 75848), (304, 71357), (418, 51896), (494, 43912), (499, 43472), (572, 37924), (836, 25948), (988, 21956), (998, 21736), (1144, 18962), (1672, 12974), (1976, 10978), (1996, 10868), (2288, 9481), (2717, 7984), (3344, 6487), (3952, 5489), (3992, 5434)]