287201920

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1$

素因数の和:330

約数の個数: 128

約数和(自身を含む): 727056000

約数和(自身を除く): 439854080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 109, 115, 128, 160, 179, 184, 218, 230, 320, 358, 368, 436, 460, 545, 640, 716, 736, 872, 895, 920, 1090, 1432, 1472, 1744, 1790, 1840, 2180, 2507, 2864, 2944, 3488, 3580, 3680, 4117, 4360, 5014, 5728, 6976, 7160, 7360, 8234, 8720, 10028, 11456, 12535, 13952, 14320, 14720, 16468, 17440, 19511, 20056, 20585, 22912, 25070, 28640, 32936, 34880, 39022, 40112, 41170, 50140, 57280, 65872, 69760, 78044, 80224, 82340, 97555, 100280, 114560, 131744, 156088, 160448, 164680, 195110, 200560, 263488, 312176, 320896, 329360, 390220, 401120, 448753, 526976, 624352, 658720, 780440, 802240, 897506, 1248704, 1317440, 1560880, 1604480, 1795012, 2243765, 2497408, 2634880, 3121760, 3590024, 4487530, 6243520, 7180048, 8975060, 12487040, 14360096, 17950120, 28720192, 35900240, 57440384, 71800480, 143600960, 287201920]

約数ペア:

[(1, 287201920), (2, 143600960), (4, 71800480), (5, 57440384), (8, 35900240), (10, 28720192), (16, 17950120), (20, 14360096), (23, 12487040), (32, 8975060), (40, 7180048), (46, 6243520), (64, 4487530), (80, 3590024), (92, 3121760), (109, 2634880), (115, 2497408), (128, 2243765), (160, 1795012), (179, 1604480), (184, 1560880), (218, 1317440), (230, 1248704), (320, 897506), (358, 802240), (368, 780440), (436, 658720), (460, 624352), (545, 526976), (640, 448753), (716, 401120), (736, 390220), (872, 329360), (895, 320896), (920, 312176), (1090, 263488), (1432, 200560), (1472, 195110), (1744, 164680), (1790, 160448), (1840, 156088), (2180, 131744), (2507, 114560), (2864, 100280), (2944, 97555), (3488, 82340), (3580, 80224), (3680, 78044), (4117, 69760), (4360, 65872), (5014, 57280), (5728, 50140), (6976, 41170), (7160, 40112), (7360, 39022), (8234, 34880), (8720, 32936), (10028, 28640), (11456, 25070), (12535, 22912), (13952, 20585), (14320, 20056), (14720, 19511), (16468, 17440)]