20547240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:483

約数の個数: 128

約数和(自身を含む): 71781120

約数和(自身を除く): 51233880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 61, 70, 84, 105, 120, 122, 140, 168, 183, 210, 244, 280, 305, 366, 401, 420, 427, 488, 610, 732, 802, 840, 854, 915, 1203, 1220, 1281, 1464, 1604, 1708, 1830, 2005, 2135, 2406, 2440, 2562, 2807, 3208, 3416, 3660, 4010, 4270, 4812, 5124, 5614, 6015, 6405, 7320, 8020, 8421, 8540, 9624, 10248, 11228, 12030, 12810, 14035, 16040, 16842, 17080, 22456, 24060, 24461, 25620, 28070, 33684, 42105, 48120, 48922, 51240, 56140, 67368, 73383, 84210, 97844, 112280, 122305, 146766, 168420, 171227, 195688, 244610, 293532, 336840, 342454, 366915, 489220, 513681, 587064, 684908, 733830, 856135, 978440, 1027362, 1369816, 1467660, 1712270, 2054724, 2568405, 2935320, 3424540, 4109448, 5136810, 6849080, 10273620, 20547240]

約数ペア:

[(1, 20547240), (2, 10273620), (3, 6849080), (4, 5136810), (5, 4109448), (6, 3424540), (7, 2935320), (8, 2568405), (10, 2054724), (12, 1712270), (14, 1467660), (15, 1369816), (20, 1027362), (21, 978440), (24, 856135), (28, 733830), (30, 684908), (35, 587064), (40, 513681), (42, 489220), (56, 366915), (60, 342454), (61, 336840), (70, 293532), (84, 244610), (105, 195688), (120, 171227), (122, 168420), (140, 146766), (168, 122305), (183, 112280), (210, 97844), (244, 84210), (280, 73383), (305, 67368), (366, 56140), (401, 51240), (420, 48922), (427, 48120), (488, 42105), (610, 33684), (732, 28070), (802, 25620), (840, 24461), (854, 24060), (915, 22456), (1203, 17080), (1220, 16842), (1281, 16040), (1464, 14035), (1604, 12810), (1708, 12030), (1830, 11228), (2005, 10248), (2135, 9624), (2406, 8540), (2440, 8421), (2562, 8020), (2807, 7320), (3208, 6405), (3416, 6015), (3660, 5614), (4010, 5124), (4270, 4812)]