21690886

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:157

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 20112890

約数列:

[1, 2, 7, 14, 23, 31, 41, 46, 53, 62, 82, 106, 161, 217, 287, 322, 371, 434, 574, 713, 742, 943, 1219, 1271, 1426, 1643, 1886, 2173, 2438, 2542, 3286, 4346, 4991, 6601, 8533, 8897, 9982, 11501, 13202, 15211, 17066, 17794, 23002, 29233, 30422, 37789, 49979, 58466, 67363, 75578, 99958, 134726, 204631, 264523, 349853, 409262, 471541, 529046, 699706, 943082, 1549349, 3098698, 10845443, 21690886]

約数ペア:

[(1, 21690886), (2, 10845443), (7, 3098698), (14, 1549349), (23, 943082), (31, 699706), (41, 529046), (46, 471541), (53, 409262), (62, 349853), (82, 264523), (106, 204631), (161, 134726), (217, 99958), (287, 75578), (322, 67363), (371, 58466), (434, 49979), (574, 37789), (713, 30422), (742, 29233), (943, 23002), (1219, 17794), (1271, 17066), (1426, 15211), (1643, 13202), (1886, 11501), (2173, 9982), (2438, 8897), (2542, 8533), (3286, 6601), (4346, 4991)]