20942368

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{281}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 44130744

約数和(自身を除く): 23188376

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 137, 272, 274, 281, 544, 548, 562, 1096, 1124, 2192, 2248, 2329, 4384, 4496, 4658, 4777, 8992, 9316, 9554, 18632, 19108, 37264, 38216, 38497, 74528, 76432, 76994, 152864, 153988, 307976, 615952, 654449, 1231904, 1308898, 2617796, 5235592, 10471184, 20942368]

約数ペア:

[(1, 20942368), (2, 10471184), (4, 5235592), (8, 2617796), (16, 1308898), (17, 1231904), (32, 654449), (34, 615952), (68, 307976), (136, 153988), (137, 152864), (272, 76994), (274, 76432), (281, 74528), (544, 38497), (548, 38216), (562, 37264), (1096, 19108), (1124, 18632), (2192, 9554), (2248, 9316), (2329, 8992), (4384, 4777), (4496, 4658)]