19780800

素因数分解:

$2^6\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{317}}^1$

素因数の和:355

約数の個数: 168

約数和(自身を含む): 70110096

約数和(自身を除く): 50329296

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 25, 26, 30, 32, 39, 40, 48, 50, 52, 60, 64, 65, 75, 78, 80, 96, 100, 104, 120, 130, 150, 156, 160, 192, 195, 200, 208, 240, 260, 300, 312, 317, 320, 325, 390, 400, 416, 480, 520, 600, 624, 634, 650, 780, 800, 832, 951, 960, 975, 1040, 1200, 1248, 1268, 1300, 1560, 1585, 1600, 1902, 1950, 2080, 2400, 2496, 2536, 2600, 3120, 3170, 3804, 3900, 4121, 4160, 4755, 4800, 5072, 5200, 6240, 6340, 7608, 7800, 7925, 8242, 9510, 10144, 10400, 12363, 12480, 12680, 15216, 15600, 15850, 16484, 19020, 20288, 20605, 20800, 23775, 24726, 25360, 30432, 31200, 31700, 32968, 38040, 41210, 47550, 49452, 50720, 60864, 61815, 62400, 63400, 65936, 76080, 82420, 95100, 98904, 101440, 103025, 123630, 126800, 131872, 152160, 164840, 190200, 197808, 206050, 247260, 253600, 263744, 304320, 309075, 329680, 380400, 395616, 412100, 494520, 507200, 618150, 659360, 760800, 791232, 824200, 989040, 1236300, 1318720, 1521600, 1648400, 1978080, 2472600, 3296800, 3956160, 4945200, 6593600, 9890400, 19780800]

約数ペア:

[(1, 19780800), (2, 9890400), (3, 6593600), (4, 4945200), (5, 3956160), (6, 3296800), (8, 2472600), (10, 1978080), (12, 1648400), (13, 1521600), (15, 1318720), (16, 1236300), (20, 989040), (24, 824200), (25, 791232), (26, 760800), (30, 659360), (32, 618150), (39, 507200), (40, 494520), (48, 412100), (50, 395616), (52, 380400), (60, 329680), (64, 309075), (65, 304320), (75, 263744), (78, 253600), (80, 247260), (96, 206050), (100, 197808), (104, 190200), (120, 164840), (130, 152160), (150, 131872), (156, 126800), (160, 123630), (192, 103025), (195, 101440), (200, 98904), (208, 95100), (240, 82420), (260, 76080), (300, 65936), (312, 63400), (317, 62400), (320, 61815), (325, 60864), (390, 50720), (400, 49452), (416, 47550), (480, 41210), (520, 38040), (600, 32968), (624, 31700), (634, 31200), (650, 30432), (780, 25360), (800, 24726), (832, 23775), (951, 20800), (960, 20605), (975, 20288), (1040, 19020), (1200, 16484), (1248, 15850), (1268, 15600), (1300, 15216), (1560, 12680), (1585, 12480), (1600, 12363), (1902, 10400), (1950, 10144), (2080, 9510), (2400, 8242), (2496, 7925), (2536, 7800), (2600, 7608), (3120, 6340), (3170, 6240), (3804, 5200), (3900, 5072), (4121, 4800), (4160, 4755)]