20789720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10607}}^1$

素因数の和:10632

約数の個数: 48

約数和(自身を含む): 54419040

約数和(自身を除く): 33629320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10607, 21214, 42428, 53035, 74249, 84856, 106070, 148498, 212140, 296996, 371245, 424280, 519743, 593992, 742490, 1039486, 1484980, 2078972, 2598715, 2969960, 4157944, 5197430, 10394860, 20789720]

約数ペア:

[(1, 20789720), (2, 10394860), (4, 5197430), (5, 4157944), (7, 2969960), (8, 2598715), (10, 2078972), (14, 1484980), (20, 1039486), (28, 742490), (35, 593992), (40, 519743), (49, 424280), (56, 371245), (70, 296996), (98, 212140), (140, 148498), (196, 106070), (245, 84856), (280, 74249), (392, 53035), (490, 42428), (980, 21214), (1960, 10607)]