21216160

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{997}}^1$

素因数の和:1038

約数の個数: 96

約数和(自身を含む): 60359040

約数和(自身を除く): 39142880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 160, 190, 224, 266, 280, 304, 380, 532, 560, 608, 665, 760, 997, 1064, 1120, 1330, 1520, 1994, 2128, 2660, 3040, 3988, 4256, 4985, 5320, 6979, 7976, 9970, 10640, 13958, 15952, 18943, 19940, 21280, 27916, 31904, 34895, 37886, 39880, 55832, 69790, 75772, 79760, 94715, 111664, 132601, 139580, 151544, 159520, 189430, 223328, 265202, 279160, 303088, 378860, 530404, 558320, 606176, 663005, 757720, 1060808, 1116640, 1326010, 1515440, 2121616, 2652020, 3030880, 4243232, 5304040, 10608080, 21216160]

約数ペア:

[(1, 21216160), (2, 10608080), (4, 5304040), (5, 4243232), (7, 3030880), (8, 2652020), (10, 2121616), (14, 1515440), (16, 1326010), (19, 1116640), (20, 1060808), (28, 757720), (32, 663005), (35, 606176), (38, 558320), (40, 530404), (56, 378860), (70, 303088), (76, 279160), (80, 265202), (95, 223328), (112, 189430), (133, 159520), (140, 151544), (152, 139580), (160, 132601), (190, 111664), (224, 94715), (266, 79760), (280, 75772), (304, 69790), (380, 55832), (532, 39880), (560, 37886), (608, 34895), (665, 31904), (760, 27916), (997, 21280), (1064, 19940), (1120, 18943), (1330, 15952), (1520, 13958), (1994, 10640), (2128, 9970), (2660, 7976), (3040, 6979), (3988, 5320), (4256, 4985)]