218697688

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{311}}^1$

素因数の和:520

約数の個数: 64

約数和(自身を含む): 459613440

約数和(自身を除く): 240915752

約数列:

[1, 2, 4, 8, 11, 22, 44, 61, 88, 122, 131, 244, 262, 311, 488, 524, 622, 671, 1048, 1244, 1342, 1441, 2488, 2684, 2882, 3421, 5368, 5764, 6842, 7991, 11528, 13684, 15982, 18971, 27368, 31964, 37942, 40741, 63928, 75884, 81482, 87901, 151768, 162964, 175802, 208681, 325928, 351604, 417362, 448151, 703208, 834724, 896302, 1669448, 1792604, 2485201, 3585208, 4970402, 9940804, 19881608, 27337211, 54674422, 109348844, 218697688]

約数ペア:

[(1, 218697688), (2, 109348844), (4, 54674422), (8, 27337211), (11, 19881608), (22, 9940804), (44, 4970402), (61, 3585208), (88, 2485201), (122, 1792604), (131, 1669448), (244, 896302), (262, 834724), (311, 703208), (488, 448151), (524, 417362), (622, 351604), (671, 325928), (1048, 208681), (1244, 175802), (1342, 162964), (1441, 151768), (2488, 87901), (2684, 81482), (2882, 75884), (3421, 63928), (5368, 40741), (5764, 37942), (6842, 31964), (7991, 27368), (11528, 18971), (13684, 15982)]