81664320

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{331}}^1$

素因数の和:608

約数の個数: 112

約数和(自身を含む): 261079488

約数和(自身を除く): 179415168

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 160, 192, 240, 257, 320, 331, 480, 514, 662, 771, 960, 993, 1028, 1285, 1324, 1542, 1655, 1986, 2056, 2570, 2648, 3084, 3310, 3855, 3972, 4112, 4965, 5140, 5296, 6168, 6620, 7710, 7944, 8224, 9930, 10280, 10592, 12336, 13240, 15420, 15888, 16448, 19860, 20560, 21184, 24672, 26480, 30840, 31776, 39720, 41120, 49344, 52960, 61680, 63552, 79440, 82240, 85067, 105920, 123360, 158880, 170134, 246720, 255201, 317760, 340268, 425335, 510402, 680536, 850670, 1020804, 1276005, 1361072, 1701340, 2041608, 2552010, 2722144, 3402680, 4083216, 5104020, 5444288, 6805360, 8166432, 10208040, 13610720, 16332864, 20416080, 27221440, 40832160, 81664320]

約数ペア:

[(1, 81664320), (2, 40832160), (3, 27221440), (4, 20416080), (5, 16332864), (6, 13610720), (8, 10208040), (10, 8166432), (12, 6805360), (15, 5444288), (16, 5104020), (20, 4083216), (24, 3402680), (30, 2722144), (32, 2552010), (40, 2041608), (48, 1701340), (60, 1361072), (64, 1276005), (80, 1020804), (96, 850670), (120, 680536), (160, 510402), (192, 425335), (240, 340268), (257, 317760), (320, 255201), (331, 246720), (480, 170134), (514, 158880), (662, 123360), (771, 105920), (960, 85067), (993, 82240), (1028, 79440), (1285, 63552), (1324, 61680), (1542, 52960), (1655, 49344), (1986, 41120), (2056, 39720), (2570, 31776), (2648, 30840), (3084, 26480), (3310, 24672), (3855, 21184), (3972, 20560), (4112, 19860), (4965, 16448), (5140, 15888), (5296, 15420), (6168, 13240), (6620, 12336), (7710, 10592), (7944, 10280), (8224, 9930)]