278513872

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{971}}^1$

素因数の和:1196

約数の個数: 80

約数和(自身を含む): 668207232

約数和(自身を除く): 389693360

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 197, 208, 364, 394, 728, 788, 971, 1379, 1456, 1576, 1942, 2561, 2758, 3152, 3884, 5122, 5516, 6797, 7768, 10244, 11032, 12623, 13594, 15536, 17927, 20488, 22064, 25246, 27188, 35854, 40976, 50492, 54376, 71708, 88361, 100984, 108752, 143416, 176722, 191287, 201968, 286832, 353444, 382574, 706888, 765148, 1339009, 1413776, 1530296, 2486731, 2678018, 3060592, 4973462, 5356036, 9946924, 10712072, 17407117, 19893848, 21424144, 34814234, 39787696, 69628468, 139256936, 278513872]

約数ペア:

[(1, 278513872), (2, 139256936), (4, 69628468), (7, 39787696), (8, 34814234), (13, 21424144), (14, 19893848), (16, 17407117), (26, 10712072), (28, 9946924), (52, 5356036), (56, 4973462), (91, 3060592), (104, 2678018), (112, 2486731), (182, 1530296), (197, 1413776), (208, 1339009), (364, 765148), (394, 706888), (728, 382574), (788, 353444), (971, 286832), (1379, 201968), (1456, 191287), (1576, 176722), (1942, 143416), (2561, 108752), (2758, 100984), (3152, 88361), (3884, 71708), (5122, 54376), (5516, 50492), (6797, 40976), (7768, 35854), (10244, 27188), (11032, 25246), (12623, 22064), (13594, 20488), (15536, 17927)]