81690240

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:450

約数の個数: 128

約数和(自身を含む): 263013120

約数和(自身を除く): 181322880

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, 128, 157, 160, 192, 240, 271, 314, 320, 384, 471, 480, 542, 628, 640, 785, 813, 942, 960, 1084, 1256, 1355, 1570, 1626, 1884, 1920, 2168, 2355, 2512, 2710, 3140, 3252, 3768, 4065, 4336, 4710, 5024, 5420, 6280, 6504, 7536, 8130, 8672, 9420, 10048, 10840, 12560, 13008, 15072, 16260, 17344, 18840, 20096, 21680, 25120, 26016, 30144, 32520, 34688, 37680, 42547, 43360, 50240, 52032, 60288, 65040, 75360, 85094, 86720, 100480, 104064, 127641, 130080, 150720, 170188, 173440, 212735, 255282, 260160, 301440, 340376, 425470, 510564, 520320, 638205, 680752, 850940, 1021128, 1276410, 1361504, 1701880, 2042256, 2552820, 2723008, 3403760, 4084512, 5105640, 5446016, 6807520, 8169024, 10211280, 13615040, 16338048, 20422560, 27230080, 40845120, 81690240]

約数ペア:

[(1, 81690240), (2, 40845120), (3, 27230080), (4, 20422560), (5, 16338048), (6, 13615040), (8, 10211280), (10, 8169024), (12, 6807520), (15, 5446016), (16, 5105640), (20, 4084512), (24, 3403760), (30, 2723008), (32, 2552820), (40, 2042256), (48, 1701880), (60, 1361504), (64, 1276410), (80, 1021128), (96, 850940), (120, 680752), (128, 638205), (157, 520320), (160, 510564), (192, 425470), (240, 340376), (271, 301440), (314, 260160), (320, 255282), (384, 212735), (471, 173440), (480, 170188), (542, 150720), (628, 130080), (640, 127641), (785, 104064), (813, 100480), (942, 86720), (960, 85094), (1084, 75360), (1256, 65040), (1355, 60288), (1570, 52032), (1626, 50240), (1884, 43360), (1920, 42547), (2168, 37680), (2355, 34688), (2512, 32520), (2710, 30144), (3140, 26016), (3252, 25120), (3768, 21680), (4065, 20096), (4336, 18840), (4710, 17344), (5024, 16260), (5420, 15072), (6280, 13008), (6504, 12560), (7536, 10840), (8130, 10048), (8672, 9420)]