20737920

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{1543}}^1$

素因数の和:1572

約数の個数: 128

約数和(自身を含む): 75594240

約数和(自身を除く): 54856320

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, 1543, 1680, 1920, 2240, 2688, 3086, 3360, 4480, 4629, 6172, 6720, 7715, 9258, 10801, 12344, 13440, 15430, 18516, 21602, 23145, 24688, 30860, 32403, 37032, 43204, 46290, 49376, 54005, 61720, 64806, 74064, 86408, 92580, 98752, 108010, 123440, 129612, 148128, 162015, 172816, 185160, 197504, 216020, 246880, 259224, 296256, 324030, 345632, 370320, 432040, 493760, 518448, 592512, 648060, 691264, 740640, 864080, 987520, 1036896, 1296120, 1382528, 1481280, 1728160, 2073792, 2592240, 2962560, 3456320, 4147584, 5184480, 6912640, 10368960, 20737920]

約数ペア:

[(1, 20737920), (2, 10368960), (3, 6912640), (4, 5184480), (5, 4147584), (6, 3456320), (7, 2962560), (8, 2592240), (10, 2073792), (12, 1728160), (14, 1481280), (15, 1382528), (16, 1296120), (20, 1036896), (21, 987520), (24, 864080), (28, 740640), (30, 691264), (32, 648060), (35, 592512), (40, 518448), (42, 493760), (48, 432040), (56, 370320), (60, 345632), (64, 324030), (70, 296256), (80, 259224), (84, 246880), (96, 216020), (105, 197504), (112, 185160), (120, 172816), (128, 162015), (140, 148128), (160, 129612), (168, 123440), (192, 108010), (210, 98752), (224, 92580), (240, 86408), (280, 74064), (320, 64806), (336, 61720), (384, 54005), (420, 49376), (448, 46290), (480, 43204), (560, 37032), (640, 32403), (672, 30860), (840, 24688), (896, 23145), (960, 21602), (1120, 18516), (1344, 15430), (1543, 13440), (1680, 12344), (1920, 10801), (2240, 9258), (2688, 7715), (3086, 6720), (3360, 6172), (4480, 4629)]