255598720

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1054

約数の個数: 128

約数和(自身を含む): 679956480

約数和(自身を除く): 424357760

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, 496, 520, 620, 640, 806, 832, 991, 992, 1040, 1240, 1612, 1664, 1982, 1984, 2015, 2080, 2480, 3224, 3964, 3968, 4030, 4160, 4955, 4960, 6448, 7928, 8060, 8320, 9910, 9920, 12883, 12896, 15856, 16120, 19820, 19840, 25766, 25792, 30721, 31712, 32240, 39640, 51532, 51584, 61442, 63424, 64415, 64480, 79280, 103064, 122884, 126848, 128830, 128960, 153605, 158560, 206128, 245768, 257660, 257920, 307210, 317120, 399373, 412256, 491536, 515320, 614420, 634240, 798746, 824512, 983072, 1030640, 1228840, 1597492, 1649024, 1966144, 1996865, 2061280, 2457680, 3194984, 3932288, 3993730, 4122560, 4915360, 6389968, 7987460, 8245120, 9830720, 12779936, 15974920, 19661440, 25559872, 31949840, 51119744, 63899680, 127799360, 255598720]

約数ペア:

[(1, 255598720), (2, 127799360), (4, 63899680), (5, 51119744), (8, 31949840), (10, 25559872), (13, 19661440), (16, 15974920), (20, 12779936), (26, 9830720), (31, 8245120), (32, 7987460), (40, 6389968), (52, 4915360), (62, 4122560), (64, 3993730), (65, 3932288), (80, 3194984), (104, 2457680), (124, 2061280), (128, 1996865), (130, 1966144), (155, 1649024), (160, 1597492), (208, 1228840), (248, 1030640), (260, 983072), (310, 824512), (320, 798746), (403, 634240), (416, 614420), (496, 515320), (520, 491536), (620, 412256), (640, 399373), (806, 317120), (832, 307210), (991, 257920), (992, 257660), (1040, 245768), (1240, 206128), (1612, 158560), (1664, 153605), (1982, 128960), (1984, 128830), (2015, 126848), (2080, 122884), (2480, 103064), (3224, 79280), (3964, 64480), (3968, 64415), (4030, 63424), (4160, 61442), (4955, 51584), (4960, 51532), (6448, 39640), (7928, 32240), (8060, 31712), (8320, 30721), (9910, 25792), (9920, 25766), (12883, 19840), (12896, 19820), (15856, 16120)]