178358128

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:390

約数の個数: 80

約数和(自身を含む): 388864000

約数和(自身を除く): 210505872

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 139, 199, 208, 248, 278, 398, 403, 496, 556, 796, 806, 1112, 1592, 1612, 1807, 2224, 2587, 3184, 3224, 3614, 4309, 5174, 6169, 6448, 7228, 8618, 10348, 12338, 14456, 17236, 20696, 24676, 27661, 28912, 34472, 41392, 49352, 55322, 56017, 68944, 80197, 98704, 110644, 112034, 160394, 221288, 224068, 320788, 359593, 442576, 448136, 641576, 719186, 857491, 896272, 1283152, 1438372, 1714982, 2876744, 3429964, 5753488, 6859928, 11147383, 13719856, 22294766, 44589532, 89179064, 178358128]

約数ペア:

[(1, 178358128), (2, 89179064), (4, 44589532), (8, 22294766), (13, 13719856), (16, 11147383), (26, 6859928), (31, 5753488), (52, 3429964), (62, 2876744), (104, 1714982), (124, 1438372), (139, 1283152), (199, 896272), (208, 857491), (248, 719186), (278, 641576), (398, 448136), (403, 442576), (496, 359593), (556, 320788), (796, 224068), (806, 221288), (1112, 160394), (1592, 112034), (1612, 110644), (1807, 98704), (2224, 80197), (2587, 68944), (3184, 56017), (3224, 55322), (3614, 49352), (4309, 41392), (5174, 34472), (6169, 28912), (6448, 27661), (7228, 24676), (8618, 20696), (10348, 17236), (12338, 14456)]