639242816

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:272

約数の個数: 112

約数和(自身を含む): 1373306880

約数和(自身を除く): 734064064

約数列:

[1, 2, 4, 8, 16, 31, 32, 43, 59, 62, 64, 86, 118, 124, 127, 172, 236, 248, 254, 344, 472, 496, 508, 688, 944, 992, 1016, 1333, 1376, 1829, 1888, 1984, 2032, 2537, 2666, 2752, 3658, 3776, 3937, 4064, 5074, 5332, 5461, 7316, 7493, 7874, 8128, 10148, 10664, 10922, 14632, 14986, 15748, 20296, 21328, 21844, 29264, 29972, 31496, 40592, 42656, 43688, 58528, 59944, 62992, 78647, 81184, 85312, 87376, 117056, 119888, 125984, 157294, 162368, 169291, 174752, 232283, 239776, 251968, 314588, 322199, 338582, 349504, 464566, 479552, 629176, 644398, 677164, 929132, 1258352, 1288796, 1354328, 1858264, 2516704, 2577592, 2708656, 3716528, 5033408, 5155184, 5417312, 7433056, 9988169, 10310368, 10834624, 14866112, 19976338, 20620736, 39952676, 79905352, 159810704, 319621408, 639242816]

約数ペア:

[(1, 639242816), (2, 319621408), (4, 159810704), (8, 79905352), (16, 39952676), (31, 20620736), (32, 19976338), (43, 14866112), (59, 10834624), (62, 10310368), (64, 9988169), (86, 7433056), (118, 5417312), (124, 5155184), (127, 5033408), (172, 3716528), (236, 2708656), (248, 2577592), (254, 2516704), (344, 1858264), (472, 1354328), (496, 1288796), (508, 1258352), (688, 929132), (944, 677164), (992, 644398), (1016, 629176), (1333, 479552), (1376, 464566), (1829, 349504), (1888, 338582), (1984, 322199), (2032, 314588), (2537, 251968), (2666, 239776), (2752, 232283), (3658, 174752), (3776, 169291), (3937, 162368), (4064, 157294), (5074, 125984), (5332, 119888), (5461, 117056), (7316, 87376), (7493, 85312), (7874, 81184), (8128, 78647), (10148, 62992), (10664, 59944), (10922, 58528), (14632, 43688), (14986, 42656), (15748, 40592), (20296, 31496), (21328, 29972), (21844, 29264)]