20938372

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 96

約数和(自身を含む): 48996864

約数和(自身を除く): 28058492

約数列:

[1, 2, 4, 7, 13, 14, 23, 26, 28, 41, 46, 52, 61, 82, 91, 92, 122, 161, 164, 182, 244, 287, 299, 322, 364, 427, 533, 574, 598, 644, 793, 854, 943, 1066, 1148, 1196, 1403, 1586, 1708, 1886, 2093, 2132, 2501, 2806, 3172, 3731, 3772, 4186, 5002, 5551, 5612, 6601, 7462, 8372, 9821, 10004, 11102, 12259, 13202, 14924, 17507, 18239, 19642, 22204, 24518, 26404, 32513, 35014, 36478, 39284, 49036, 57523, 65026, 70028, 72956, 85813, 115046, 127673, 130052, 171626, 227591, 230092, 255346, 343252, 402661, 455182, 510692, 747799, 805322, 910364, 1495598, 1610644, 2991196, 5234593, 10469186, 20938372]

約数ペア:

[(1, 20938372), (2, 10469186), (4, 5234593), (7, 2991196), (13, 1610644), (14, 1495598), (23, 910364), (26, 805322), (28, 747799), (41, 510692), (46, 455182), (52, 402661), (61, 343252), (82, 255346), (91, 230092), (92, 227591), (122, 171626), (161, 130052), (164, 127673), (182, 115046), (244, 85813), (287, 72956), (299, 70028), (322, 65026), (364, 57523), (427, 49036), (533, 39284), (574, 36478), (598, 35014), (644, 32513), (793, 26404), (854, 24518), (943, 22204), (1066, 19642), (1148, 18239), (1196, 17507), (1403, 14924), (1586, 13202), (1708, 12259), (1886, 11102), (2093, 10004), (2132, 9821), (2501, 8372), (2806, 7462), (3172, 6601), (3731, 5612), (3772, 5551), (4186, 5002)]