21647490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:323

約数の個数: 64

約数和(自身を含む): 54020736

約数和(自身を除く): 32373246

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 97, 129, 173, 194, 215, 258, 291, 346, 430, 485, 519, 582, 645, 865, 970, 1038, 1290, 1455, 1730, 2595, 2910, 4171, 5190, 7439, 8342, 12513, 14878, 16781, 20855, 22317, 25026, 33562, 37195, 41710, 44634, 50343, 62565, 74390, 83905, 100686, 111585, 125130, 167810, 223170, 251715, 503430, 721583, 1443166, 2164749, 3607915, 4329498, 7215830, 10823745, 21647490]

約数ペア:

[(1, 21647490), (2, 10823745), (3, 7215830), (5, 4329498), (6, 3607915), (10, 2164749), (15, 1443166), (30, 721583), (43, 503430), (86, 251715), (97, 223170), (129, 167810), (173, 125130), (194, 111585), (215, 100686), (258, 83905), (291, 74390), (346, 62565), (430, 50343), (485, 44634), (519, 41710), (582, 37195), (645, 33562), (865, 25026), (970, 22317), (1038, 20855), (1290, 16781), (1455, 14878), (1730, 12513), (2595, 8342), (2910, 7439), (4171, 5190)]