21306530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{5743}}^1$

素因数の和:5810

約数の個数: 32

約数和(自身を含む): 44665344

約数和(自身を除く): 23358814

約数列:

[1, 2, 5, 7, 10, 14, 35, 53, 70, 106, 265, 371, 530, 742, 1855, 3710, 5743, 11486, 28715, 40201, 57430, 80402, 201005, 304379, 402010, 608758, 1521895, 2130653, 3043790, 4261306, 10653265, 21306530]

約数ペア:

[(1, 21306530), (2, 10653265), (5, 4261306), (7, 3043790), (10, 2130653), (14, 1521895), (35, 608758), (53, 402010), (70, 304379), (106, 201005), (265, 80402), (371, 57430), (530, 40201), (742, 28715), (1855, 11486), (3710, 5743)]