20448840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:307

約数の個数: 128

約数和(自身を含む): 66355200

約数和(自身を除く): 45906360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 31, 40, 46, 60, 62, 69, 92, 93, 115, 120, 124, 138, 155, 184, 186, 230, 239, 248, 276, 310, 345, 372, 460, 465, 478, 552, 620, 690, 713, 717, 744, 920, 930, 956, 1195, 1240, 1380, 1426, 1434, 1860, 1912, 2139, 2390, 2760, 2852, 2868, 3565, 3585, 3720, 4278, 4780, 5497, 5704, 5736, 7130, 7170, 7409, 8556, 9560, 10695, 10994, 14260, 14340, 14818, 16491, 17112, 21390, 21988, 22227, 27485, 28520, 28680, 29636, 32982, 37045, 42780, 43976, 44454, 54970, 59272, 65964, 74090, 82455, 85560, 88908, 109940, 111135, 131928, 148180, 164910, 170407, 177816, 219880, 222270, 296360, 329820, 340814, 444540, 511221, 659640, 681628, 852035, 889080, 1022442, 1363256, 1704070, 2044884, 2556105, 3408140, 4089768, 5112210, 6816280, 10224420, 20448840]

約数ペア:

[(1, 20448840), (2, 10224420), (3, 6816280), (4, 5112210), (5, 4089768), (6, 3408140), (8, 2556105), (10, 2044884), (12, 1704070), (15, 1363256), (20, 1022442), (23, 889080), (24, 852035), (30, 681628), (31, 659640), (40, 511221), (46, 444540), (60, 340814), (62, 329820), (69, 296360), (92, 222270), (93, 219880), (115, 177816), (120, 170407), (124, 164910), (138, 148180), (155, 131928), (184, 111135), (186, 109940), (230, 88908), (239, 85560), (248, 82455), (276, 74090), (310, 65964), (345, 59272), (372, 54970), (460, 44454), (465, 43976), (478, 42780), (552, 37045), (620, 32982), (690, 29636), (713, 28680), (717, 28520), (744, 27485), (920, 22227), (930, 21988), (956, 21390), (1195, 17112), (1240, 16491), (1380, 14818), (1426, 14340), (1434, 14260), (1860, 10994), (1912, 10695), (2139, 9560), (2390, 8556), (2760, 7409), (2852, 7170), (2868, 7130), (3565, 5736), (3585, 5704), (3720, 5497), (4278, 4780)]