81776880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2143}}^1$

素因数の和:2215

約数の個数: 120

約数和(自身を含む): 279946368

約数和(自身を除く): 198169488

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 53, 60, 72, 80, 90, 106, 120, 144, 159, 180, 212, 240, 265, 318, 360, 424, 477, 530, 636, 720, 795, 848, 954, 1060, 1272, 1590, 1908, 2120, 2143, 2385, 2544, 3180, 3816, 4240, 4286, 4770, 6360, 6429, 7632, 8572, 9540, 10715, 12720, 12858, 17144, 19080, 19287, 21430, 25716, 32145, 34288, 38160, 38574, 42860, 51432, 64290, 77148, 85720, 96435, 102864, 113579, 128580, 154296, 171440, 192870, 227158, 257160, 308592, 340737, 385740, 454316, 514320, 567895, 681474, 771480, 908632, 1022211, 1135790, 1362948, 1542960, 1703685, 1817264, 2044422, 2271580, 2725896, 3407370, 4088844, 4543160, 5111055, 5451792, 6814740, 8177688, 9086320, 10222110, 13629480, 16355376, 20444220, 27258960, 40888440, 81776880]

約数ペア:

[(1, 81776880), (2, 40888440), (3, 27258960), (4, 20444220), (5, 16355376), (6, 13629480), (8, 10222110), (9, 9086320), (10, 8177688), (12, 6814740), (15, 5451792), (16, 5111055), (18, 4543160), (20, 4088844), (24, 3407370), (30, 2725896), (36, 2271580), (40, 2044422), (45, 1817264), (48, 1703685), (53, 1542960), (60, 1362948), (72, 1135790), (80, 1022211), (90, 908632), (106, 771480), (120, 681474), (144, 567895), (159, 514320), (180, 454316), (212, 385740), (240, 340737), (265, 308592), (318, 257160), (360, 227158), (424, 192870), (477, 171440), (530, 154296), (636, 128580), (720, 113579), (795, 102864), (848, 96435), (954, 85720), (1060, 77148), (1272, 64290), (1590, 51432), (1908, 42860), (2120, 38574), (2143, 38160), (2385, 34288), (2544, 32145), (3180, 25716), (3816, 21430), (4240, 19287), (4286, 19080), (4770, 17144), (6360, 12858), (6429, 12720), (7632, 10715), (8572, 9540)]