21400090

素因数分解:

$2^1\times 5^1\times {\mathrm{569}}^1\times {\mathrm{3761}}^1$

素因数の和:4337

約数の個数: 16

約数和(自身を含む): 38598120

約数和(自身を除く): 17198030

約数列:

[1, 2, 5, 10, 569, 1138, 2845, 3761, 5690, 7522, 18805, 37610, 2140009, 4280018, 10700045, 21400090]

約数ペア:

[(1, 21400090), (2, 10700045), (5, 4280018), (10, 2140009), (569, 37610), (1138, 18805), (2845, 7522), (3761, 5690)]