281984640

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{20981}}^1$

素因数の和:21010

約数の個数: 128

約数和(自身を含む): 1027278720

約数和(自身を除く): 745294080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 840, 896, 960, 1120, 1344, 1680, 1920, 2240, 2688, 3360, 4480, 6720, 13440, 20981, 41962, 62943, 83924, 104905, 125886, 146867, 167848, 209810, 251772, 293734, 314715, 335696, 419620, 440601, 503544, 587468, 629430, 671392, 734335, 839240, 881202, 1007088, 1174936, 1258860, 1342784, 1468670, 1678480, 1762404, 2014176, 2203005, 2349872, 2517720, 2685568, 2937340, 3356960, 3524808, 4028352, 4406010, 4699744, 5035440, 5874680, 6713920, 7049616, 8056704, 8812020, 9399488, 10070880, 11749360, 13427840, 14099232, 17624040, 18798976, 20141760, 23498720, 28198464, 35248080, 40283520, 46997440, 56396928, 70496160, 93994880, 140992320, 281984640]

約数ペア:

[(1, 281984640), (2, 140992320), (3, 93994880), (4, 70496160), (5, 56396928), (6, 46997440), (7, 40283520), (8, 35248080), (10, 28198464), (12, 23498720), (14, 20141760), (15, 18798976), (16, 17624040), (20, 14099232), (21, 13427840), (24, 11749360), (28, 10070880), (30, 9399488), (32, 8812020), (35, 8056704), (40, 7049616), (42, 6713920), (48, 5874680), (56, 5035440), (60, 4699744), (64, 4406010), (70, 4028352), (80, 3524808), (84, 3356960), (96, 2937340), (105, 2685568), (112, 2517720), (120, 2349872), (128, 2203005), (140, 2014176), (160, 1762404), (168, 1678480), (192, 1468670), (210, 1342784), (224, 1258860), (240, 1174936), (280, 1007088), (320, 881202), (336, 839240), (384, 734335), (420, 671392), (448, 629430), (480, 587468), (560, 503544), (640, 440601), (672, 419620), (840, 335696), (896, 314715), (960, 293734), (1120, 251772), (1344, 209810), (1680, 167848), (1920, 146867), (2240, 125886), (2688, 104905), (3360, 83924), (4480, 62943), (6720, 41962), (13440, 20981)]