638626784

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{1093}}^1$

素因数の和:1184

約数の個数: 72

約数和(自身を含む): 1368790920

約数和(自身を除く): 730164136

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 76, 124, 152, 248, 304, 496, 589, 608, 961, 992, 1093, 1178, 1922, 2186, 2356, 3844, 4372, 4712, 7688, 8744, 9424, 15376, 17488, 18259, 18848, 20767, 30752, 33883, 34976, 36518, 41534, 67766, 73036, 83068, 135532, 146072, 166136, 271064, 292144, 332272, 542128, 584288, 643777, 664544, 1050373, 1084256, 1287554, 2100746, 2575108, 4201492, 5150216, 8402984, 10300432, 16805968, 19957087, 20600864, 33611936, 39914174, 79828348, 159656696, 319313392, 638626784]

約数ペア:

[(1, 638626784), (2, 319313392), (4, 159656696), (8, 79828348), (16, 39914174), (19, 33611936), (31, 20600864), (32, 19957087), (38, 16805968), (62, 10300432), (76, 8402984), (124, 5150216), (152, 4201492), (248, 2575108), (304, 2100746), (496, 1287554), (589, 1084256), (608, 1050373), (961, 664544), (992, 643777), (1093, 584288), (1178, 542128), (1922, 332272), (2186, 292144), (2356, 271064), (3844, 166136), (4372, 146072), (4712, 135532), (7688, 83068), (8744, 73036), (9424, 67766), (15376, 41534), (17488, 36518), (18259, 34976), (18848, 33883), (20767, 30752)]