126638720

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:554

約数の個数: 128

約数和(自身を含む): 337236480

約数和(自身を除く): 210597760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 491, 496, 520, 620, 640, 806, 832, 982, 992, 1040, 1240, 1612, 1664, 1964, 1984, 2015, 2080, 2455, 2480, 3224, 3928, 3968, 4030, 4160, 4910, 4960, 6383, 6448, 7856, 8060, 8320, 9820, 9920, 12766, 12896, 15221, 15712, 16120, 19640, 19840, 25532, 25792, 30442, 31424, 31915, 32240, 39280, 51064, 51584, 60884, 62848, 63830, 64480, 76105, 78560, 102128, 121768, 127660, 128960, 152210, 157120, 197873, 204256, 243536, 255320, 257920, 304420, 314240, 395746, 408512, 487072, 510640, 608840, 791492, 817024, 974144, 989365, 1021280, 1217680, 1582984, 1948288, 1978730, 2042560, 2435360, 3165968, 3957460, 4085120, 4870720, 6331936, 7914920, 9741440, 12663872, 15829840, 25327744, 31659680, 63319360, 126638720]

約数ペア:

[(1, 126638720), (2, 63319360), (4, 31659680), (5, 25327744), (8, 15829840), (10, 12663872), (13, 9741440), (16, 7914920), (20, 6331936), (26, 4870720), (31, 4085120), (32, 3957460), (40, 3165968), (52, 2435360), (62, 2042560), (64, 1978730), (65, 1948288), (80, 1582984), (104, 1217680), (124, 1021280), (128, 989365), (130, 974144), (155, 817024), (160, 791492), (208, 608840), (248, 510640), (260, 487072), (310, 408512), (320, 395746), (403, 314240), (416, 304420), (491, 257920), (496, 255320), (520, 243536), (620, 204256), (640, 197873), (806, 157120), (832, 152210), (982, 128960), (992, 127660), (1040, 121768), (1240, 102128), (1612, 78560), (1664, 76105), (1964, 64480), (1984, 63830), (2015, 62848), (2080, 60884), (2455, 51584), (2480, 51064), (3224, 39280), (3928, 32240), (3968, 31915), (4030, 31424), (4160, 30442), (4910, 25792), (4960, 25532), (6383, 19840), (6448, 19640), (7856, 16120), (8060, 15712), (8320, 15221), (9820, 12896), (9920, 12766)]