20994912

素因数分解:

$2^5\times 3^2\times {\mathrm{269}}^1\times {\mathrm{271}}^1$

素因数の和:556

約数の個数: 72

約数和(自身を含む): 60147360

約数和(自身を除く): 39152448

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 269, 271, 288, 538, 542, 807, 813, 1076, 1084, 1614, 1626, 2152, 2168, 2421, 2439, 3228, 3252, 4304, 4336, 4842, 4878, 6456, 6504, 8608, 8672, 9684, 9756, 12912, 13008, 19368, 19512, 25824, 26016, 38736, 39024, 72899, 77472, 78048, 145798, 218697, 291596, 437394, 583192, 656091, 874788, 1166384, 1312182, 1749576, 2332768, 2624364, 3499152, 5248728, 6998304, 10497456, 20994912]

約数ペア:

[(1, 20994912), (2, 10497456), (3, 6998304), (4, 5248728), (6, 3499152), (8, 2624364), (9, 2332768), (12, 1749576), (16, 1312182), (18, 1166384), (24, 874788), (32, 656091), (36, 583192), (48, 437394), (72, 291596), (96, 218697), (144, 145798), (269, 78048), (271, 77472), (288, 72899), (538, 39024), (542, 38736), (807, 26016), (813, 25824), (1076, 19512), (1084, 19368), (1614, 13008), (1626, 12912), (2152, 9756), (2168, 9684), (2421, 8672), (2439, 8608), (3228, 6504), (3252, 6456), (4304, 4878), (4336, 4842)]