857155208

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2075

約数の個数: 128

約数和(自身を含む): 2150400000

約数和(自身を除く): 1293244792

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 31, 38, 52, 56, 62, 76, 91, 104, 124, 133, 152, 182, 217, 247, 248, 266, 364, 403, 434, 494, 532, 589, 728, 806, 868, 988, 1064, 1178, 1612, 1729, 1736, 1976, 1999, 2356, 2821, 3224, 3458, 3998, 4123, 4712, 5642, 6916, 7657, 7996, 8246, 11284, 13832, 13993, 15314, 15992, 16492, 22568, 25987, 27986, 30628, 32984, 37981, 51974, 53599, 55972, 61256, 61969, 75962, 103948, 107198, 111944, 123938, 151924, 181909, 207896, 214396, 247876, 265867, 303848, 363818, 428792, 433783, 493753, 495752, 531734, 727636, 805597, 867566, 987506, 1063468, 1177411, 1455272, 1611194, 1735132, 1975012, 2126936, 2354822, 3222388, 3456271, 3470264, 3950024, 4709644, 5639179, 6444776, 6912542, 8241877, 9419288, 11278358, 13825084, 15306343, 16483754, 22556716, 27650168, 30612686, 32967508, 45113432, 61225372, 65935016, 107144401, 122450744, 214288802, 428577604, 857155208]

約数ペア:

[(1, 857155208), (2, 428577604), (4, 214288802), (7, 122450744), (8, 107144401), (13, 65935016), (14, 61225372), (19, 45113432), (26, 32967508), (28, 30612686), (31, 27650168), (38, 22556716), (52, 16483754), (56, 15306343), (62, 13825084), (76, 11278358), (91, 9419288), (104, 8241877), (124, 6912542), (133, 6444776), (152, 5639179), (182, 4709644), (217, 3950024), (247, 3470264), (248, 3456271), (266, 3222388), (364, 2354822), (403, 2126936), (434, 1975012), (494, 1735132), (532, 1611194), (589, 1455272), (728, 1177411), (806, 1063468), (868, 987506), (988, 867566), (1064, 805597), (1178, 727636), (1612, 531734), (1729, 495752), (1736, 493753), (1976, 433783), (1999, 428792), (2356, 363818), (2821, 303848), (3224, 265867), (3458, 247876), (3998, 214396), (4123, 207896), (4712, 181909), (5642, 151924), (6916, 123938), (7657, 111944), (7996, 107198), (8246, 103948), (11284, 75962), (13832, 61969), (13993, 61256), (15314, 55972), (15992, 53599), (16492, 51974), (22568, 37981), (25987, 32984), (27986, 30628)]