28778880

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1153}}^1$

素因数の和:1188

約数の個数: 128

約数和(自身を含む): 98874720

約数和(自身を除く): 70095840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 384, 390, 416, 480, 520, 624, 640, 780, 832, 960, 1040, 1153, 1248, 1560, 1664, 1920, 2080, 2306, 2496, 3120, 3459, 4160, 4612, 4992, 5765, 6240, 6918, 8320, 9224, 11530, 12480, 13836, 14989, 17295, 18448, 23060, 24960, 27672, 29978, 34590, 36896, 44967, 46120, 55344, 59956, 69180, 73792, 74945, 89934, 92240, 110688, 119912, 138360, 147584, 149890, 179868, 184480, 221376, 224835, 239824, 276720, 299780, 359736, 368960, 442752, 449670, 479648, 553440, 599560, 719472, 737920, 899340, 959296, 1106880, 1199120, 1438944, 1798680, 1918592, 2213760, 2398240, 2877888, 3597360, 4796480, 5755776, 7194720, 9592960, 14389440, 28778880]

約数ペア:

[(1, 28778880), (2, 14389440), (3, 9592960), (4, 7194720), (5, 5755776), (6, 4796480), (8, 3597360), (10, 2877888), (12, 2398240), (13, 2213760), (15, 1918592), (16, 1798680), (20, 1438944), (24, 1199120), (26, 1106880), (30, 959296), (32, 899340), (39, 737920), (40, 719472), (48, 599560), (52, 553440), (60, 479648), (64, 449670), (65, 442752), (78, 368960), (80, 359736), (96, 299780), (104, 276720), (120, 239824), (128, 224835), (130, 221376), (156, 184480), (160, 179868), (192, 149890), (195, 147584), (208, 138360), (240, 119912), (260, 110688), (312, 92240), (320, 89934), (384, 74945), (390, 73792), (416, 69180), (480, 59956), (520, 55344), (624, 46120), (640, 44967), (780, 36896), (832, 34590), (960, 29978), (1040, 27672), (1153, 24960), (1248, 23060), (1560, 18448), (1664, 17295), (1920, 14989), (2080, 13836), (2306, 12480), (2496, 11530), (3120, 9224), (3459, 8320), (4160, 6918), (4612, 6240), (4992, 5765)]