21560196

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{991}}^1$

素因数の和:1049

約数の個数: 72

約数和(自身を含む): 60162816

約数和(自身を除く): 38602620

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 49, 74, 84, 98, 111, 147, 148, 196, 222, 259, 294, 444, 518, 588, 777, 991, 1036, 1554, 1813, 1982, 2973, 3108, 3626, 3964, 5439, 5946, 6937, 7252, 10878, 11892, 13874, 20811, 21756, 27748, 36667, 41622, 48559, 73334, 83244, 97118, 110001, 145677, 146668, 194236, 220002, 256669, 291354, 440004, 513338, 582708, 770007, 1026676, 1540014, 1796683, 3080028, 3593366, 5390049, 7186732, 10780098, 21560196]

約数ペア:

[(1, 21560196), (2, 10780098), (3, 7186732), (4, 5390049), (6, 3593366), (7, 3080028), (12, 1796683), (14, 1540014), (21, 1026676), (28, 770007), (37, 582708), (42, 513338), (49, 440004), (74, 291354), (84, 256669), (98, 220002), (111, 194236), (147, 146668), (148, 145677), (196, 110001), (222, 97118), (259, 83244), (294, 73334), (444, 48559), (518, 41622), (588, 36667), (777, 27748), (991, 21756), (1036, 20811), (1554, 13874), (1813, 11892), (1982, 10878), (2973, 7252), (3108, 6937), (3626, 5946), (3964, 5439)]