20648040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{523}}^1$

素因数の和:591

約数の個数: 128

約数和(自身を含む): 72437760

約数和(自身を除く): 51789720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 47, 56, 60, 70, 84, 94, 105, 120, 140, 141, 168, 188, 210, 235, 280, 282, 329, 376, 420, 470, 523, 564, 658, 705, 840, 940, 987, 1046, 1128, 1316, 1410, 1569, 1645, 1880, 1974, 2092, 2615, 2632, 2820, 3138, 3290, 3661, 3948, 4184, 4935, 5230, 5640, 6276, 6580, 7322, 7845, 7896, 9870, 10460, 10983, 12552, 13160, 14644, 15690, 18305, 19740, 20920, 21966, 24581, 29288, 31380, 36610, 39480, 43932, 49162, 54915, 62760, 73220, 73743, 87864, 98324, 109830, 122905, 146440, 147486, 172067, 196648, 219660, 245810, 294972, 344134, 368715, 439320, 491620, 516201, 589944, 688268, 737430, 860335, 983240, 1032402, 1376536, 1474860, 1720670, 2064804, 2581005, 2949720, 3441340, 4129608, 5162010, 6882680, 10324020, 20648040]

約数ペア:

[(1, 20648040), (2, 10324020), (3, 6882680), (4, 5162010), (5, 4129608), (6, 3441340), (7, 2949720), (8, 2581005), (10, 2064804), (12, 1720670), (14, 1474860), (15, 1376536), (20, 1032402), (21, 983240), (24, 860335), (28, 737430), (30, 688268), (35, 589944), (40, 516201), (42, 491620), (47, 439320), (56, 368715), (60, 344134), (70, 294972), (84, 245810), (94, 219660), (105, 196648), (120, 172067), (140, 147486), (141, 146440), (168, 122905), (188, 109830), (210, 98324), (235, 87864), (280, 73743), (282, 73220), (329, 62760), (376, 54915), (420, 49162), (470, 43932), (523, 39480), (564, 36610), (658, 31380), (705, 29288), (840, 24581), (940, 21966), (987, 20920), (1046, 19740), (1128, 18305), (1316, 15690), (1410, 14644), (1569, 13160), (1645, 12552), (1880, 10983), (1974, 10460), (2092, 9870), (2615, 7896), (2632, 7845), (2820, 7322), (3138, 6580), (3290, 6276), (3661, 5640), (3948, 5230), (4184, 4935)]