208458328

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{641}}^1$

素因数の和:772

約数の個数: 64

約数和(自身を含む): 436816800

約数和(自身を除く): 228358472

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 59, 104, 106, 118, 212, 236, 424, 472, 641, 689, 767, 1282, 1378, 1534, 2564, 2756, 3068, 3127, 5128, 5512, 6136, 6254, 8333, 12508, 16666, 25016, 33332, 33973, 37819, 40651, 66664, 67946, 75638, 81302, 135892, 151276, 162604, 271784, 302552, 325208, 441649, 491647, 883298, 983294, 1766596, 1966588, 2004407, 3533192, 3933176, 4008814, 8017628, 16035256, 26057291, 52114582, 104229164, 208458328]

約数ペア:

[(1, 208458328), (2, 104229164), (4, 52114582), (8, 26057291), (13, 16035256), (26, 8017628), (52, 4008814), (53, 3933176), (59, 3533192), (104, 2004407), (106, 1966588), (118, 1766596), (212, 983294), (236, 883298), (424, 491647), (472, 441649), (641, 325208), (689, 302552), (767, 271784), (1282, 162604), (1378, 151276), (1534, 135892), (2564, 81302), (2756, 75638), (3068, 67946), (3127, 66664), (5128, 40651), (5512, 37819), (6136, 33973), (6254, 33332), (8333, 25016), (12508, 16666)]