638348776

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{613}}^1$

素因数の和:699

約数の個数: 128

約数和(自身を含む): 1485388800

約数和(自身を除く): 847040024

約数列:

[1, 2, 4, 8, 13, 17, 19, 26, 31, 34, 38, 52, 62, 68, 76, 104, 124, 136, 152, 221, 247, 248, 323, 403, 442, 494, 527, 589, 613, 646, 806, 884, 988, 1054, 1178, 1226, 1292, 1612, 1768, 1976, 2108, 2356, 2452, 2584, 3224, 4199, 4216, 4712, 4904, 6851, 7657, 7969, 8398, 10013, 10421, 11647, 13702, 15314, 15938, 16796, 19003, 20026, 20842, 23294, 27404, 30628, 31876, 33592, 38006, 40052, 41684, 46588, 54808, 61256, 63752, 76012, 80104, 83368, 93176, 130169, 135473, 151411, 152024, 197999, 247039, 260338, 270946, 302822, 323051, 361057, 395998, 494078, 520676, 541892, 605644, 646102, 722114, 791996, 988156, 1041352, 1083784, 1211288, 1292204, 1444228, 1583992, 1976312, 2573987, 2584408, 2888456, 4199663, 4693741, 5147974, 6137969, 8399326, 9387482, 10295948, 12275938, 16798652, 18774964, 20591896, 24551876, 33597304, 37549928, 49103752, 79793597, 159587194, 319174388, 638348776]

約数ペア:

[(1, 638348776), (2, 319174388), (4, 159587194), (8, 79793597), (13, 49103752), (17, 37549928), (19, 33597304), (26, 24551876), (31, 20591896), (34, 18774964), (38, 16798652), (52, 12275938), (62, 10295948), (68, 9387482), (76, 8399326), (104, 6137969), (124, 5147974), (136, 4693741), (152, 4199663), (221, 2888456), (247, 2584408), (248, 2573987), (323, 1976312), (403, 1583992), (442, 1444228), (494, 1292204), (527, 1211288), (589, 1083784), (613, 1041352), (646, 988156), (806, 791996), (884, 722114), (988, 646102), (1054, 605644), (1178, 541892), (1226, 520676), (1292, 494078), (1612, 395998), (1768, 361057), (1976, 323051), (2108, 302822), (2356, 270946), (2452, 260338), (2584, 247039), (3224, 197999), (4199, 152024), (4216, 151411), (4712, 135473), (4904, 130169), (6851, 93176), (7657, 83368), (7969, 80104), (8398, 76012), (10013, 63752), (10421, 61256), (11647, 54808), (13702, 46588), (15314, 41684), (15938, 40052), (16796, 38006), (19003, 33592), (20026, 31876), (20842, 30628), (23294, 27404)]