278957392

素因数分解:

$2^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:409

約数の個数: 120

約数和(自身を含む): 674852640

約数和(自身を除く): 395895248

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 49, 56, 61, 76, 98, 112, 122, 133, 152, 196, 244, 266, 304, 307, 392, 427, 488, 532, 614, 784, 854, 931, 976, 1064, 1159, 1228, 1708, 1862, 2128, 2149, 2318, 2456, 2989, 3416, 3724, 4298, 4636, 4912, 5833, 5978, 6832, 7448, 8113, 8596, 9272, 11666, 11956, 14896, 15043, 16226, 17192, 18544, 18727, 23332, 23912, 30086, 32452, 34384, 37454, 40831, 46664, 47824, 56791, 60172, 64904, 74908, 81662, 93328, 113582, 120344, 129808, 131089, 149816, 163324, 227164, 240688, 262178, 285817, 299632, 326648, 355813, 454328, 524356, 571634, 653296, 711626, 908656, 917623, 1048712, 1143268, 1423252, 1835246, 2097424, 2286536, 2490691, 2846504, 3670492, 4573072, 4981382, 5693008, 7340984, 9962764, 14681968, 17434837, 19925528, 34869674, 39851056, 69739348, 139478696, 278957392]

約数ペア:

[(1, 278957392), (2, 139478696), (4, 69739348), (7, 39851056), (8, 34869674), (14, 19925528), (16, 17434837), (19, 14681968), (28, 9962764), (38, 7340984), (49, 5693008), (56, 4981382), (61, 4573072), (76, 3670492), (98, 2846504), (112, 2490691), (122, 2286536), (133, 2097424), (152, 1835246), (196, 1423252), (244, 1143268), (266, 1048712), (304, 917623), (307, 908656), (392, 711626), (427, 653296), (488, 571634), (532, 524356), (614, 454328), (784, 355813), (854, 326648), (931, 299632), (976, 285817), (1064, 262178), (1159, 240688), (1228, 227164), (1708, 163324), (1862, 149816), (2128, 131089), (2149, 129808), (2318, 120344), (2456, 113582), (2989, 93328), (3416, 81662), (3724, 74908), (4298, 64904), (4636, 60172), (4912, 56791), (5833, 47824), (5978, 46664), (6832, 40831), (7448, 37454), (8113, 34384), (8596, 32452), (9272, 30086), (11666, 23912), (11956, 23332), (14896, 18727), (15043, 18544), (16226, 17192)]