278898568

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:255

約数の個数: 128

約数和(自身を含む): 637056000

約数和(自身を除く): 358157432

約数列:

[1, 2, 4, 8, 13, 19, 26, 29, 31, 38, 52, 58, 62, 76, 104, 116, 124, 152, 157, 232, 247, 248, 314, 377, 403, 494, 551, 589, 628, 754, 806, 899, 988, 1102, 1178, 1256, 1508, 1612, 1798, 1976, 2041, 2204, 2356, 2983, 3016, 3224, 3596, 4082, 4408, 4553, 4712, 4867, 5966, 7163, 7192, 7657, 8164, 9106, 9734, 11687, 11932, 14326, 15314, 16328, 17081, 18212, 19468, 23374, 23864, 28652, 30628, 34162, 36424, 38779, 38936, 46748, 57304, 59189, 61256, 63271, 68324, 77558, 86507, 92473, 93496, 118378, 126542, 136648, 141143, 155116, 173014, 184946, 222053, 236756, 253084, 282286, 310232, 346028, 369892, 444106, 473512, 506168, 564572, 692056, 739784, 888212, 1124591, 1129144, 1202149, 1776424, 1834859, 2249182, 2404298, 2681717, 3669718, 4498364, 4808596, 5363434, 7339436, 8996728, 9617192, 10726868, 14678872, 21453736, 34862321, 69724642, 139449284, 278898568]

約数ペア:

[(1, 278898568), (2, 139449284), (4, 69724642), (8, 34862321), (13, 21453736), (19, 14678872), (26, 10726868), (29, 9617192), (31, 8996728), (38, 7339436), (52, 5363434), (58, 4808596), (62, 4498364), (76, 3669718), (104, 2681717), (116, 2404298), (124, 2249182), (152, 1834859), (157, 1776424), (232, 1202149), (247, 1129144), (248, 1124591), (314, 888212), (377, 739784), (403, 692056), (494, 564572), (551, 506168), (589, 473512), (628, 444106), (754, 369892), (806, 346028), (899, 310232), (988, 282286), (1102, 253084), (1178, 236756), (1256, 222053), (1508, 184946), (1612, 173014), (1798, 155116), (1976, 141143), (2041, 136648), (2204, 126542), (2356, 118378), (2983, 93496), (3016, 92473), (3224, 86507), (3596, 77558), (4082, 68324), (4408, 63271), (4553, 61256), (4712, 59189), (4867, 57304), (5966, 46748), (7163, 38936), (7192, 38779), (7657, 36424), (8164, 34162), (9106, 30628), (9734, 28652), (11687, 23864), (11932, 23374), (14326, 19468), (15314, 18212), (16328, 17081)]